Just happened to read your post about hating your body type. Looking at your pics in your album I can only imagine that if I met you on the prowl, I'd be real turned on and find you hot.
I understand though that my saying that it won't help you out. Your mind-- our minds -- can work against us and we each have to do what we can to work through a psychological problem like this. I think you mentioned that you are in therapy--hope that will work for you. Give it time. The advice also given by others here-- like seeking out a bear/cub group is a good one. Stay around friends who are supportive and like you as you are.
I have a similar problem as your's but coming from the opposite direction. I'm very thin and because of a thyroid condition I'm always going to be that way. I was also made fun of by school chums while growing up. That is devastating and it sticks with us for our life. I found that some therapy did help me and got me back on track to love myself.
I still dread the summer when I need to wear shorts and don't have long-sleeved shirts and jeans to hide how skinny my legs and arms are. After so many years I'm not so bogged down with negative feelings about myself though. I ignore the gay community propaganda that you are only desirable with six-pack abs and a beefy, muscular body. Still I have moments of hating how I look. Maybe we never quite get over it entirely, but overall I'm more accepting of myself--a lot more than when I was a teenager and in my 20's. I was also fortunate to have some long-lasting relationships where I was accepted as I am, giving me self-confidence.
Take care and I wish you the best.