We like each other but have never met.?

[Jennifer Williams]

I'm in year 11 at my school and one day this cute lad in sixthform pops up on facebook and since then we have been messaging on and off. I like him and it's obvious he likes me too. But the thing is we have never met in person although we go to the same school.
I'm nervous incase we pass in school incase he doesn't like who I am behind my profile picture. He asked to meet with me tomorrow but I made up an excuse to get out of it. I think the problem is I met up with a mate (my age) the other day and although we text and see eachother once a week at college it was a very very awkward day because it turns out he 'likes' me and I couldn't wait to leave because he's totally different to how he texts and I'm afraid it'll be the same thing with this other guy. What do I do?