I say what I'm about to say from experience...
Don't let a man or relationship define you. sometimes we get our identity from what we mean to others instead of what we mean to ourselves. In other words, you want to be loved. You wanted him to love you. You tried to make yourself loveable in his eyes. It is only when you love yourself that you will attract a nice healthy relationship.
If I were in your situation, and again I am saying this with 20/20 hindsight, I would not try to date at all until I got in touch with my own personal power. You can only be in a loving relationship with another if you are already in a loving relationship with yourself.
What are your goals right now? What are you working towards achieving?
No man will be able to "make" you happy. No one can make you feel anything. We always choose how we are going to feel. If you're wanting to be happy or be loved, start with simply loving yourself.
