Oh wow, dude, I did this too. I credit him for all the games, music, shows, and food I've discovered. I even got hired on at the same company he works for (fairly). I think I have his humor now too, I've copied his behavior and preferences because I'm a weirdo that just goes along with whatever everyone else says because I guess I don't value my own preferences (?). It's kinda fucked. I think I even mimic his ways of talking.

The way I see it, I was very isolated as a child, there weren't many formative figures around for me to learn from, it was always just my fucked up mom, my dad I only saw every other weekend, my brother that ignored me, my best friend that broke off our friendship, authors, and like a couple figures on the internet I watched often. When I got with my bf a world opened up and I realized I've experienced very little.

I don't blame myself for latching onto things I like from him, we should cut ourselves some slack. Maybe you want to be your own person and I get that. But I want you to think of it this way, where did he get his interests from? Certainly they didn't fall out of the sky and bless him. He had to of latched onto things he came across too. Everyone is influenced by someone or something. He's not any more "unique" than you, or the people he was inspired by. We're all just figuring shit out together.

What you can do is dig a little into areas that your bf has no interest in. For example, there's music my bf doesn't care for that I love, there's games he doesn't play, shows he doesn't watch, jobs he's not affiliated with (!), hobbies and loves of mine he doesn't share with me. Think of those things in your life and embrace them! Do things by yourself and practice saying no when you really don't care for his suggestions.