Want a boyfriend, but worried about image and weight?

[Jayy]

Hi...
So, I'm 16.Im 5"3, and just about 125 lbs. I'm a Junior in high school, and while I'm not TOTALLY into having a boyfriend at the moment...I always think about having one, but then I look at myself and ask, who would find me attractive?
I had a boyfriend before, like last year, but I wasn't really attractive to him....he probably wasn't even really into me either, he just wanted someone to kiss...and I just kinda wanted the experience.
I'm not really looking for a boyfriend right now, though there are a few cute boys at my school
but like..I'm kinda shy around people I don't know, and I don't have many friends, I'm really? anti-social, its just, I like my space. and that last boyfriend was like, always up my butt wanting to hang out evry second of everyday. And it annoyed me.
Trying to find that right guy...but I'm scard. I live in California, and a large majority of the girls at my school are twigs! and I'm not. I'm not HUGE, but I'm not tiny. I got some chub in my stomach, and I bloat, really easily..like glass of water and my stomach stretches! (medical condition?lol)

Guys, what do you like in a girl?
Once someone gets to know me and Im comfortable, I'm all up for sports or a movie, or just hanging, or whatever, i'm pretty flexble with it all. Got a semi-messy medium pixie cut (brown hair) and brown eyes, lots of energy and a big heart, but I'm convinced I'm gonna grow up and die single...
Its kinda degrading on the self-image/esteem thing.
And that's not all that high either. I've always been pretty confident and outgoing....at least, more so around people I know, you know. I'm not one to just go hang out with strangers...I don't like being hurt. I knew a guy once who liked to move in uninvited on my personal space and my body, so I don't really let guys in right away...

There any hope for me?
Thanks guys...no rude comments please...:\
Wow guys, thanks for all the nice encouraging words...making me feel better as I read them all..