I think it is important to discuss this with your T. You have said a lot in this thread and all of what you said is important.

You have a challenged past as you were a victim, that made you reach out and accept the wrong kind of person. It is important you work through all the aspects that led to that so in the future you don't turn to another person who might mistreat you. Your goal is to make gains now on understanding whatever your history has led to your possible low self esteem. CBT is also very helpful with this challenge.