Not attracted to my girlfriend

I’ve been with my girlfriend for almost a year now and things are going good, now she isn’t even ugly but the “problem” is that she’s a big girl very big, now that being said there is nothing wrong with that and it is something I have been and can continue to overlook, but it’s just not physically appealing for me. I love her and she’s a good girl this isn’t really a reason to break up with her over but I find myself constantly thinking how nice it would be to have someone I was just physically attracted to. I wish I could have someone and think “dam my girl is fine af” and I’m no asking for any unrealistic looking girl or anything like that but idk I don’t feel physically attracted to my girlfriend basically does anyone have advice for me