One of my friends got pregnant from her MST but she had an abortion, the only way they could charge him with assault was a DNA test which at the time could only be done after the child was born. She already was a single mom and didn’t want to go through all of that just to get a conviction (totally understandable). I’m so sorry you’ve had to go through this. My mom treated me like this, although I look just like her so I don’t know how I could have reminded her of my dad (that she left before I was born). I really wish she’d put me up for adoption honestly because it was clear she loved my sister but wanted nothing to do with me. Your son needs a mother and you maybe should find a different therapist to help you navigate your feelings towards how your son came to be and who he is as a person. I’m sure his personality is a little different than the mans, and that he shares some of your interests?