Boyfriend vs Me

So I know that my boyfriend is absolutely in love with me and I love him too. He always says that he loves my body and the way that I look but he's a personal trainer and works out everyday and he's like HOT, I'm overweight and I know I'm not ugly and I'm pretty confident in myself but I can't get over that he's so in shape and everything and I'm not and that he's okay with that, especially since he's a personal trainer. It just doesn't make sense to me. Is anyone else in this situation? Or does anyone have any advice??