When the same things happen in relationships with me, or I see unhealthy patterns I have to reflect back on me. Am I somehow putting out signals that attracts unhealthy relationships? Do I move to fast? Do I like the idea of a girlfriend so much that I am willing to put up with more than the average person? Do I model behavior that would lead anyone to take advantage of me? When things are on constant repeat it is you who needs to change. I am not sure if that means being more discriminate with who you invest your time in, or better "red flag" catching? You know yourself better than us, or even the women you date. Honestly, despite how lonely you may feel or...unfinished it is a worthy cause to try an stay single and work on yourself.