Opposites attract?

So recently I’ve been talking to a new guy. I really like him but I feel like me & him wouldn’t work out in the long run. We are complete opposites. I’m a shy, quiet, “good girl”. I don’t smoke/drink/ or party. I’m extremely chill & he’s very outgoing. He doesn’t smoke but he drinks & likes to party. I just feel like I’m not really his type because I’m not anything like him. I’m afraid that he accepts me now for who I am then once we start getting serious, he will want me to change who I am. I guess I’m probably overthinking this because he’s never complained about the way I am yet but maybe I’m just way into my head. I don’t want to feel like I have to change myself to his standards. He’s an amazing guy so far but I still have this thought in the back of my head....