First off, sorry if this doesn't go here, but I couldn't think of anywhere better.
So, I've lost about 40 pounds and although I'm still not exactly sveldt I'm muscular, pretty well proportioned and not nearly as bad as I was. Problem is, I always blamed the fact that I couldn't cope with dating or even admitting I was attracted to someone and the whole relationship thing just not happening on the fact that I was fat, so nobody was interested in me.
Now I look around and realize that just most people are better at handling relationships than I am regardless of weight and people fatter than I generally didn't live out their lives in isolation because of it. I'm 17, so I'm still pretty young, but I feel like I've missed out on a crucial chance for experimentation and I JUST DON'T KNOW HOW RELATIONSHIPS WORK. I guess the problem is my attitude, probably shaped by a couple of years of having most attempts at social interaction met with "You're fat!" and being asked out often as a joke. I've gotten better at admitting being attracted to people to myself, but trying to force myself to dance still sends me into hysterics and all in all I still don't get it.
Has anyone dealt with this sort of thing? How, practically speaking, are relationships supposed to work? How do I get past this stuff and teach myself to function socially like a normal human being?

