I can remember you sympathizing with Peachy101 years ago and giving understanding advice. I mention that not only to show you are someone that cares for others, but also because you a far from alone in how you feel.
It is not weak or selfish, and does not show a flaw in one's character to feel the lack of a partner.
I'm one of those who is not complete without someone to love and be loved by and I suspect you may be too. You may think it is just you wanting something for yourself, but you would be wrong. When you do find another I'm more than sure you will be giving as well as receiving, and that's how it should be
I'm expect you already know what to do, resume your social life and look for someone whom is kind, feels like you do and with whom you click and have fun.
BTW some loving mums do cuddle distressed daughters, it's both a burden and a comfort (for both I guess:)