afraid of him not liking my body?

I met this guy through a 4 way phone skype call with my friends. He was a friend of theirs. He lives in the same city as me and we have lots of mutuals, and for a while now we've been talking on Facebook and through text. We've face timed before too. He's said many times that he really likes me.. He's always saying I'm beautiful and funny and always wanting to go on a date with me. The thing is that I've been struggling with my weight the last few years and I'm really insecure. I'm a size 16 in pants and not wearing plus-sized clothes but close. I'm afraid he'll see me in person and see how fat I am and not like me anymore. I'm 18 and he's also the same age.