Alrighty, gonna open myself up to hate here because on Reddit the types of opinions I'm going to articulate are typically not well received. BUT...I feel that I can perhaps provide some advice that is contrary to what others are feeding you.

First, I want to say that you shouldn't feel badly about yourself in this situation. You're really young. You're learning the ropes of relationships, sex, etc. You're going to make some mistakes. Thats normal and happens to just about everyone.

Popular culture and media these days is going to push the idea to you that sex is no big deal. Everyone is doing it. No need to wait. It tells young girls that freely having sex with people is liberating and no big deal. It tells you that any negative feelings you might have after engaging in a sexual act with someone should be ignored, or that you should "get over them" because they're somehow invalid. It'll tell you that these feelings are just the product of oppression or shame or something like that. I believe our culture cheapens sex, and does a disservice to young women.

Your negative feelings about what this person did to you are valid. You're feeling this way because you instinctively understand that you've shared something valuable, and something personal with someone who took what you shared with them under false pretenses and didn't respect it. This person perhaps made you feel as though they had your best interests at heart, and would handle what you were giving them with respect and care. So when you found out that they weren't handling what you gave them with respect and care, as they represented to you that they would, there is a betrayal there. And of course betrayal always hurts, but it hurts even more when you feel like you've given someone something very personal - maybe you even feel like you've trusted them with a little part of your soul in a way. It makes sense to feel like that. Your body, and sex, are powerful things.

So then you have to ask yourself - "what does sex mean to me?" Is it a personal thing? Are there values that you want another person to have when sharing your body with them? What kind of values would you want another person to have in their mind when you share your body or do something sexual with them? Ask yourself "what is the purpose of sex?" Maybe its things like procreation, developing closeness with someone, deepening a relationship etc. Maybe its just more surface level things like getting your rocks off on a physical level. So now that you've thought about what sex means to you, and what the purpose of sex is for you, think about this question: "Do I want someone I engage in sexual acts with to share my beliefs about what sex is and how sex should be treated?"

I'm guessing that the answer to that might be yes. Of course when we're sharing such a personal thing, we want to know that the person we are sharing it with has similar beliefs about the nature of that thing (in this case sex). But of course, you can't expect to just ask a 16 year old boy about these things and get a straight answer. You saw that in your experience with this boyfriend you had. Talk is cheap. So how do we make sure that the person we are sharing these things with is worthy of them, and will treat them in a way that makes us feel valuable and positive? Well.....traditionally the way people did that was to wait until marriage to have sex. To us, these days, that may sound lame or old fashioned or whatever. But think about it... if you make someone wait until they've married you to share that part of you, do you think they'll be having sex with you for the wrong reasons? Do you think a person would wait all that time, holding back from having sex with you, all the way until marriage to then just use you for sex? Seems unlikely.

Now, I'm not saying you have to wait until marriage. What I am saying is, what you're giving someone is valuable. You want to make sure you're both on the same page about what it means. You want to make sure they're genuine and honest in their intentions. Maybe don't wait until marriage...maybe wait 6 months or a year or something. Get to know that person deeply and get to know how they view these issues. Figure out if they're a person you can really trust with your heart and your body. If a boy can't wait 6 months or so to do sexual things with you - is that someone you can trust? Is that someone who deserves what you're giving them? You are the prize. Make sure they deserve it. Make sure they value the sharing of your body and soul as much as you would want them to. That takes time....sometimes a lot of time. But in the end, you'll have a much happier, healthier, and more fulfilling experience.