I don't know how much more bluntly I can put it:

Learn to be happy by yourself. Life is beautiful even if you don't "have" a romantic partner. If you're not comfortable being by yourself and if you're not able to grow beyond your pain and neediness, no one in their right mind is going to want to be in a relationship with you. If, by some freak shot in the dark, you DO end up forging a relationship while you're this needy, I can guarantee you my friend that that relationship will not end well for you.