i think i have a crush on my bsf

so! me and my bsf let's refer to him as J. we're extremely close and we know each other very well. we have multiple conversations about how our mind works and we're very open to each other in general. whats so bad about that right!.... i think, im starting to like him? BUT im actively pushing that thought away because we both r very realistic and picture how the relationship would play out first. though,,, like.. he's said repeatedly that im extremely interesting and he wants to know every part of me. ESPECIALLY me. he said. because he told our friend group once "oh i love studying people but especially Aven (me)" SO I WAS TAKEN ABACK! nobody is that straight forward and then i asked him ok why tho???? he said "youre really complex and i wanna know you, it's rewarding" OH??!!??? OKAY. Even outside of that we have very clear communication with each other and frequent heart to heart talks when insecurity is expressed. as you can probably tell, he's intelligent. like. really, a man with a brain. he told me "you're everything i want in a person and a friend" and said multiple times that i am his other half. I know it sounds platonic, it is, maybe we're just very good friends. we have expressed how much we love each other like multiple times, probably everyday he's my one call away. literally, saved my life again and again. also, super Intuitive. he studies me for so long even when i try to act normal despite feeling terrible, he just KNOWS. and says "i noticed you were acting off today because of this and that blah blah, wanna talk about it?" LAAAWWWWDD he truly knows me and how i think. am i crazy for liking him? this probably sounds platonic idk IDK ALSO. SHOULD I CONFESS???