Is it normal to be afraid to go for it?

There's this amazing guy. I swear he's sweet, funny, and smart. He and I have been talking for a few weeks and he's mentioned maybe turning this to a real relationship. I like this guy like a lot..But(<-- there's always a 'but') he's too good looking. I mean not in a possibly gay sort of way, but he has this nice fit body and the most dreamy eyes and seriously I don't feel like I can handle it. I feel like I'd be preasured to look better than I do now, or simply look good at all.(<-- notice my insecurity level? Lol)He's never made me feel bad about myself..actually quite the opposite, but I'm scared about the preasure I would put on myself for being with him..Is this normal?...and should I give this a shot?