He's sooooo hot and I'm so not....?

Me and this guy who's a year older than be are hanging out tomorrow. We've become really good friends and now I think he likes me a I like him. And well he has a 6 pack and is just overall hot, except he's only a few inches taller. Which is fine. But Im just afraid if him seeing me in a bathing suit when we go tanning together tomorrow because I'm really self conscious about my butt, like cellulite. I'm justso afraid of what he will think. Any suggestions?