Fit guy and chubby girl

I’ve always been a “chunky” girl, I wouldn’t say fat but definitely overweight. I’m a college freshman who recently has started getting out there and trying to date and I keep feeling self conscious because of my weight and I feel like guys won’t find me attractive because of it. I met this guy who is incredibly sweet, handsome, and very athletic off of tinder. We’ve gone out on 2 dates and had a blast together and halfway through our last date he asked me on a 3rd one, so clearly he’s interested in me? The thing is he’s very very athletic and conscious about what he eats. He runs 3-6 miles a day and weight trains and eats very healthy. It makes me nervous that’s he’s not going to like me because I’m a chubby girl, I’ve never had a guy who was athletic be into me before and it makes me feel a bit nervous. I’m trying to exercise and eat healthier because I want to feel good about my body. Anyone else have this same thing happen? Do chubby girls and fit guys really work out?