u/New-Championship-855

I (15F) have been best friends with A (15M) for five years. At the start of our friendship he had a crush on me for a year or so and he confessed to me but it wasn’t mutual. A year after he got over his crush I realised that I had feelings for him, half a year later I confessed to him and it was unreciprocated, after some time i got over it and finally stopped liking him. All of this time we continued being friends but recently we had an argument and stopped talking for a while. Stuff like this has happened before and we always became friends again, but this time I didn’t put as much effort into repairing our friendship as before (it was always his fault and i was always the one trying to get our friendship back, until now). This time he was the one to reach out. We talked and i told him that this time i accepted the possibility of losing our friendship and thought that it could be for the best. And he realised how our disagreements affected me, to the point I didn’t want to be friends anymore. He was extremely worried about losing and was constantly getting upset because of it. After that he apologised countless times and started treating me so much better on everyday basis, treating me like i was special. He started to want to spend time just the two of us, he defended me in front of our friends making my comfort his priority, he told me he loved me and started telling me how great i am and how important i am to him (he has a hard time expressing his feelings and he doesn’t really say this stuff). Things were smooth with him this month after we started talking again. We were talking a lot more than before, started understanding each other and accepting each other’s ways of dealing with stuff, we comforted each other and it was just great spending time together. And today i got a text from him and he freaking confessed to me. I understood that he was acting kind of suspicious but i thought it was from the excitement of being friends again. I’m really confused about my feelings for him and i don’t know if i see him that way. After i stopped liking him and now when he became overly affectionate the idea of something in a romantic context with him became kind of off putting to me, but now i’m not really sure. What should i do now?
Tldr
My best friend (15M) of 5 years confessed to me (15F) and I don’t know what to do. We’ve liked each other in the past but it was never mutual. I need advice.