would you confess to a guy you like?

so since school started i developed a crush on a guy but like he is sooo slow i don't know why but he doesn't notice girls at all like i've never met a guy this slow but i'm sure he's not gay.but the good thing is i know that he doesn't think of me as annoying because he is so moody and there was this one time that a girl said he looked good and he didn't appreciate it at all but we've talked several times and it wasn't like he just wanted the conversation to end or anything like that he really like talked back and stuff specially i say funny things and he laughs at me a lot lol.but really i don't know what to do i don't think he likes me like that but i do i also told my bff and she told me i shouldn't leave any regrets but one part of me says i should just forget it besides i really wouldn't want to get rejected that would be hoooorible