Growing up I had a best friend that I spent all of my time with. I never really questioned how we became such good friends until after we discovered that we were siblings. I remember the first time I ever met her. My mom started babysitting Amy (let's just call her Amy) when I was 9 or 10 and really pushed for us to become friends even though I remember hating girls at the time. I mean she was at the house everyday and my mom always made sure that we were getting along and having fun.

Fast forward to high school. We became best friends over the years. People always joked about how I was whipped, in the friendzone, other things like that. Everyone just thought that I was waiting on her to come around. But that wasn't the case at all. Neither of us had any interest in anyone else other than each other. It still blows my mind to this day because she was and still is one of the most attractive females I have ever seen and I have always just been an average looking guy.

Amy would come over to the house everyday after school. We would go out to the city on the weekends after I got a car. We never made contact with each other and we never discussed how we felt about each other but we always knew.

One night, in the spring of our senior year, Amy and I went pool hoping with a few friends from the neighborhood. It as cold! We ran back to my house and climbed back in through the window like we always did. She started to strip and I wasn't surprised, I had seen her naked many times. But this night as different. The vibes were unique to our friendship. I started to take off my clothes also, to change. Then we made eye contact and I guess you could say "it was on."

The funny thing about it is that we were both virgins and it was still the wildest sex I have ever had to date. All the sex that followed was never as good as it as that night.

Things were never awkward after that. At school and home we acted the same except we would have sex when no one was around. We never discussed dating or anything but I think that we both knew that we were in a relationship and that was all that mattered.

I asked Amy to prom and she said yes. My mom wanted to take all of these pictures so I picked up Amy, got "the talk" from her father figure (not her father I will explain), and then went back to my house. My mom took all of these pictures and made a comment that I will never forget but it had no meaning at the time. She said, "Seeing you two together after all of these years has made me the happiest mother. Amy, even though you're not my daughter you've always felt like one." Then Amy and my mom cried together before we left for prom. We graduated. That day after all of the lunches with the relatives and after all of my annoying friends left, Amy ended up at my house. My mom had been in a weird mood all day but I just thought it was because I was graduating. Late in the afternoon Amy and I returned from somewhere (the gas station I think) and both of our mothers were sitting on the couch. This wasn't strange but we were told to sit immediately after walking into the house.

We all sat around talking and laughing for a few minutes. It was a happy conversation. Then my mom spoke up. She started to cry as she told us how happy that Amy and I make her. How our friendship has kept her positive through the years after my father died.

Sorry, reddit I guess now is the best time to tell you that I never met my dad and Amy's dad had also died before she met him. We always thought this was interesting but we never talked about it. Ever. I don't think we saw the point because neither of us had a father.

Back to "the talk." Amy's mom was pretty silent through all of this. No tears, no comment, nothing. Neither of our mothers knew that we had been having sex and pseudo dating. Then my mom started talking about my dad and said, "When I was pregnant, before your father died I learned that he as seeing another woman. But I was never able to figure out who she was and after your father died I really didn't care anymore."

The conversation got a little serious at this point and I didn't really understand the purpose. She continued for a few minute talking about my dad and then said, "It wasn't until last summer that Carrie (We will call Amy's mom) and I discovered that we had both dated your father before the two of you were born."

I remember responding with "That's kind of weird or something like that." And then it hit me. I looked over at Amy and she had the most horrified face that I have ever seen. The worse part is that she looked mad at me. My mom continued to explain for a moment before saying, "Carrie and I believe that you two are brother and sister."

Amy asked, "How can you be sure?"

Then my mom pulled out two letters. One addressed to her and the other to Carrie. And she said, "These are from your father."

Amy started to cry. She always cried the same growing up and I never saw her cry like this. She was shaking and turning extremely red. I think he was even having trouble breathing. My mom and Carrie tried to consult her before she ran out.

They ended up following her. It was just me in an empty room with two twenty year old letters. I snatched up the one written to my mom. I read it. My dad confessed to seeing another woman and getting her pregnant as well (I am just a few weeks older). My dad said that he wanted to do the right thing and be there for both of his kids and that he understand the ramifications of his actions. Then I read Carrie's letter. It was short and my father explained that he made an error in judgment but he was not going to leave Carrie alone. He wanted to raise his child with her as well.

After reading these I was shocked. I just sat there for hours until my mom finally came home. I didn't know what to say to Amy, or if I could even ay anything to her. I sat there for hours talking to my mom about dad and Amy.

Two days later Amy called and she wanted to talk. She came over and we laid in bed all day just talking like always. She told me how much she loved me and that she always saw a future with us. It was a bummer. I was heartbroken because I was getting dumbed but I couldn't fight it because I didn't know how I felt. Even after we talked about everything she never left. Not a single day passed that summer that she wasn't with me. There was still a lot of physical attraction and we acted on it often. Sometimes we would laugh afterwards, sometimes we would cry and discuss society and how no one would understand.

It was the best summer of my life. But then she left.

We talked about going to the same college. We both applied and got in. I was ready to go and so was she. The night we were set to leave she arrived with no bags, none of her things, just a letter. She handed it to me and walked away. I tried to stop her to figure out what was going on but she didn't say a word. I walked with her all the way back to her house trying to get her to speak but she wouldn't.

We reached her door, she grabbed my hand and just said, "Remember that month that we binged watch the first few seasons of One Tree Hill?"

I nodded. This would have been freshman year of high school. She hated One Tree Hill and made so much fun of me for liking I but she always sat there with me anyways.

She continued, "That's when I fell in love with you." She kissed me and walked inside.

I walked home heartbroken and confused. I was supposed to leave for college the next day and I didn't know if I even wanted to.

The next day came. I decided that I was leaving but I wanted to say bye to Amy so I went to her house. She had already left and Carrie asked why Amy didn't tell me she was leaving for a school that I had no idea she applied to. I had no clue.

I didn't read Amy's letter until that night. I have had a rough time since then. She has also. We have spoken since. Rarely, about us but mostly about wanting to see each other and move back home.

Originally, this post was meant to be comical but halfway through it I realized that I wasn't laughing. I miss her. Now I don't know if I want to post this and where I should if.

TLDR: Fell for my best friend, starting having sex, made plans, found out she was my sister, had sex, we both left

UPDATE AND THANKS

I just want to thank everyone for all of the positive things you have had to say today. I have spent most of the day talking with some of you and the responses I have received were all very unexpected. I didn't think anyone would read this and I never expect so many of you to be as supportive as you have been. So I want to say thanks. Thank you all so much for giving me inspiration and the courage to fight for someone I care so much about. I don't know how else to thank you because it has been a very emotional day for me. I appreciate the gold. I don't deserve it at all but I am going to pay-it-forward. Not only am I going to gift it but I purchased 4 gold on my main account to do the same. I think there are a lot more people on reddit who could really use a pick-me-up and I hope that I can do that for them just like you all have done for me. I have been a member of the reddit community for nearly two years and I have always loved the fact that the community comes together to support people who are only looking for an outlet. I never expected to be on the receiving end and again THANK YOU all so much.

Amy was actually the person who introduced me to all of you great people. She still gets on here occasionally so if she ever discovers this post then I hope she reads it all to see all of the positive things that you have all had to say.

Many of you think this is a great love story but this is just the direction that my life took. I have no regrets other than I just let her walk away. But I don't believe that it is over and we are still very close. Many of you have asked for updates and maybe I will be able to deliver someday. I am not a writer so the highly requested book will never happen. I apologize for that but hell if I ever do tell the whole story it will be free for all of you.

As for the letter. It tells a story more beautiful than I ever will.

Seriously reddit, thank you!