As a bi enby I can't even separate "wanting to be like someone" from "wanting to be with someone," let alone clearly separating platonic, romantic, and sexual feelings. Like I just wanna hang out and do whatever we vibe with, and that could include sexy stuff or cuddly stuff or hobby stuff or deep conversations or whatever. I guess ideally I would try to see someone not being interested in sex as similar to them not being interested in going skydiving together, though there's a lot of social conditioning that can make that difficult in practice. Generally though if I think somebody's cool then I'm happy to be able to hang out with them in whatever capacity works.