Narcissism- If you're in a relationship full of ups & downs and you're constantly trying to prove your love and get back what you had in the beginning - look up Narcissism. A bad relationship will make you feel more alone than when you were single.
I think every woman needs to learn to not need anyone and to always always be able to hold herself up alone. Nothing wrong with love of being with a man, just learn to keep your independence! Needing and wanting a man in your life is different.