Need advice on my boyfriend's lack of sexual interest

So I want some advice on my situation and I know it’s kinda weird to talk about on this app but idk it’s been making my borderline act up. So I have a boyfriend I have been with him for a few months and we just aren’t too sexually active. It just makes me feel like I’m not enough. Awhile ago he said “I used to have more sex with my ex” “ I don’t know why but with her I was down to bone all the time” “it’s not anything with you I just changed” and we talked about it multiple times and has apologized about it. But honestly I feel like I can’t get over that statement no matter how hard I try. I’m a pretty sexual person and he just isn’t with me. I want that validation. And part of me tells me to leave it’s not with my time or pull away so he will try to fix things and another part says stay because I love him he’s my favorite person and I don’t want to be dating someone new again. It makes me feel not pretty or that something is wrong with me. I’m still so hurt over him saying that. What do I do? I need advice on how to handle this