I can only imagine what it feels like to have your condition. I would be lying if I said I knew how it felt.
But, I too am 27 years old and I never had what you call a xmas love, new years kiss, summer fling, etc. I don't let it bother me much, know why? Because I have respect and PRIDE in who I am. I never look down on myself and say I'm not good enough. I don't let people's thoughts or opinions affect me.
You too should have more respect and pride toward yourself. Please don't be so defeated and let others walk over you because that is exactly what you are doing if you end your life.