What tf do i do?

I (15f) have been with my bf (17m) for 8 months and i have know my bsf(16m) for about 2 years. I’ve had feelings for my bsf in the past (like a year ago) but recently I’ve been feeling like he might be flirting with me but i have absolutely zero clue and i’m afraid i might like him aswell. I know I’m going to get tons of negativity about this post and honestly I don’t blame anyone but myself but i really need some sort of advice here. Some of the reasons i feel like he might like me are the following. I’m a very touchy person by nature and i tend to lay my head on people’s shoulders all the time (regardless if the person is a boy or girl) and i’ve noticed that when i do it with him he wraps his arm around my shoulders and starts caressing my arm. We often play fight, but more in an aggressive but affectionate way i guess. He let me put my touch id on his ipad, i know his pin and i also have my instagram account on his phone. Recently we spent the whole day together because of a school thing he asked me to go to with him and we had breakfast and dinner together prior and subsequently to the event, and whenever i tried to pay for the both of us he insisted on paying for me and said, and i quote, “I can pay for you but you can’t”. His parents were also present at said event and i found out that whenever his mother would go to the organizers that knew my bsf they would complain that we were “too close” and to that she answered with “let him f**k in peace”. I have no idea what to think, writing it all out it foes sound really bad but honestly I really do love and care about my bf more than anything else. It feels so wrong but honestly i feel like i might have feelings for him and i feel terrible about it, I can’t stop thinking about this situation and it’s literally killing me from the inside.