Struggling to find myself [LONG POST]

So basically, I'm a 13 year old (turning 14 next month) who's all over the place to be honest... (I know it's early but still) i'm not gay, nor bi, I really don't like classing myself but i'd say i'm 75% straight. But theres this guy, thats the same age as me that i really like, he's my type, everything in common, so close, we talk all the time, we're best mates. But i really wanna be with him, nobody else makes me feel like what he makes me feel like, idek. It's weird for me of course being clueless to only liking 1 boy but still being straight. I texted him earlier telling him my feelings he said he felt the same but we always joke around about this bs, and i could tell he was being sarcastic. I told him everything ranging from that i've liked him ever since we really started talking a lot, the start of last year to that i love him like in a mates way but i really want to say that to us two being together... (The guy i like, he's not gay, nor bi i think)If anyone could help by leaving a comment down below that would be good i guess. Thanks. (anonymous incase my mates see this post, they'll hate me!)