Loneliness and desperation can attract the wrong kind of people. The kind of people who lead you on and then leave you feeling used or taken advantage of. I hate being alone myself, and I would border on saying I can't really tolerate it, but problems or feelings you have with yourself usually cause problems in the releationship.

I would try and focus on being happy and content with yourself. When you are happier and have optimism it is easier to find someone. People tend to gravitate towards people that are happier than, ones that are depressed/sad from my experience.

There are a lot of people in this world and each of them has thier own values and personality. I think the question to ask yourself is what you want in a partner. Is it merely a person to be with you to satiate your feelings of lonilness or do you want something deeper, to find a connection and bond with another person.

Dating is sort of like eating chocolates. They all look the same on the surface, but you don't get the full experience until you jump in. Keep your spirits up. It sucks not having anyone to spend time with and feel loved by, but it can happen at anytime. You could bump into that person you fall madly in love with. Try not to feel too bad that you haven't found that yet or feel like you are unlovable. It is quite possible you have just been around a stream of jerks who weren't right for you.