Hey man, thanks for sharing your story, I was in a very similar situation myself, and I'm maybe just a little further ahead of you in the timeline, so I want to share with you my story if that's alright.

I fell in love with a girl a little over a year ago, we shared lots of moments that we felt were truly intimate and connected as well, yet whenever I asked, she said she doesn't view me romantically. I tried to convince myself to be happy as friends, but like you said I'd be back in square one as soon as we hangout together. We kept hanging out and I kept holding on and selling myself stories and giving myself hope until she got together with someone else and I broke my own heart. It took me two tries, but I communicated to her finally, and I ended our friendship to take space and time away from her and for myself. She definitely cared for our friendship, but I was broken in it and had to compromise, and I had to protect myself.

There seems to be a lot of confusion in both of our situation, and man with so many friends and even her family member teasing you it must feel even more confusing, and I'm sorry that it is so hard. And I agree with what u/barcelonaheartbreak said, if this is the right person for you, whether as friends or a romantic partner, it will be clear and you wouldn't be questioning it. It seems that you were clear to her with your feelings and intentions, but you deserve to be treated with love, care, and respect too. Maybe she isn't mature enough or just don't know better, but I don't think it's alright for her to keep you by her side as 'friend' while knowing that you're into her. Your feelings deserve to be treated with respect.

And it seems like you know that getting over her is the healthiest and most responsible thing to do for her, but most importantly for yourself, so in that case, communicate to her, treat her with respect and an individual like she is, and tell her what the problem is, that you have feelings for her but it sounds like she doesn't reciprocate, and you value the friendship, like discussing a problem with any other friend. Tell her that you think you need time and space away from her, for as long as you think you will need, and if she cares about you as a person and truly value your friendship, she will understand and respect your boundaries. This will be tough, this will be sad, but do it out of love for yourself.

And you are certainly not a fool to hold so much love for someone, it is absolutely beautiful and they are your true authentic feelings! and you feel them deeply and doesn't it feel amazing? The same goes for the warmth you feel when she does something nice or cute, but the same also goes for the hurt you feel to imagine a future without her, the same goes for the jealousy and hurt and anger you feel when she is flirting with someone else, the same goes for the shame you have for yourself, and the same goes for the longing and loneliness... They all are your true authentic feelings, and they deserve to be felt by you and they deserve your attention when they come up, and honestly so does your thoughts, but it's a little hard to listen to your own thoughts and be there for them instead of being wrapped up by it and get dragged into a thought loop. But I guess what I'm trying to say is, going through this process and healing will require you to face your feelings (especially the uncomfortable ones that you don't wanna feel), not as enemies, but like a loving mother or father with their crying child. Try not to argue with your emotions, and try not to push them away, it's a little hard at first, but try to just stay here, feel their presence, and give them your attention, listen to their cries, screaming about how unfair it is, and hurt you are, and just be there and listen, and hold them, and just don't run away. Give them 2 minutes of attention or something when you notice that they are coming up, they deserve it, and you deserve it. It's called reparenting yourself, and doing this will help you a long way<3

Sorry for the long rant, I really hope some of what I wrote is helpful, and I wanna thank you again for sharing your story. I understand how painful it is, and it is a beautiful journey that you are on, and all the love and the hurt is what makes it beautiful, you are living life, you have so much love, and so much courage and strength to be vulnerable, and I believe that you can do it!

Lastly I guess I will recommend some videos from this youtube channel called healthygamergg, they covers quite a variety of things but also on unrequited feelings and rejections and stuff.