I think my bf wants to be me?

So I (24M) have been dating my bf (25M) for like a year now and I’m concerned that he wants to be me or something. It’s at a point where it’s kind of weird and giving me the ick I kind of liked him for who he was originally when we first started talking but it’s weird as hell now because he’s literally trying to become me. Like he’s stolen how I dress, how I talk, my diet, gym routine, the part of the city I live in, and now he’s trying to enter the same field of work I’m in and it’s creeping me out lowkey . The list goes on but I’m genuinely kind of feeling disturbed. Like he’s literally basically stealing all of my personality and I’m not sure if it’s on purpose or what but I’m getting serious vibes like he is trying to become me in the weirdest way. Am I bugging or is he like a psychopath or something?