I totally understand this topic, I had been overweight all my life, and never once had a serious relationship. OK i am lying, I had one, my ex gf, but even then I can tell she wishes I was skinny.
Because of the fact that men don't want to date me because of my weight, it hurts me, as well as my self esteem, in matter of fact, my self esteem is very low. The more lower my self esteem goes, the more i resist to meeting new people because I don't want to get hurt again, and I just feel that nobody will want me for the way I look.