Dad dumps Mom

My father decided he wanted out of his marriage to my mother and so they divorced. Mom got the house and alimony and my father left. I was 18 at the time and my mother 44, I was the only one of 3 still living at home so it was me who had to support her thru the divorce and help her start a new life. I'm average in every way and training to be an electrician, I dated regularly and done okay in my mind anyway. After a year my mother was slowly getting back to so called normal. I was 19 and decided it was about time I found my own place, but not wanting to upset my mother didn't say anything to her. I kept an eye out for a suitable place to rent, nothing I could afford was available and the ones I could afford, I didn't want. Another 6months still at home with my mother and she caught me masturbating. Shocked a little at first, she soon recovered and asked did I want any help. I was still a bet shocked and didn't know what she meant by help, but nodded approval and so she undressed and joined me on my bed. My cock recovered any loss of stiffness it had lost on my getting caught and my mother started stroking my cock. But she soon decided to ramp it up as she said, she started sucking me off and I blew into her mouth. Not finished with me she told it was her turn and had me go down on her and then I fucked her. Which I still do today on a regularly, 4 years later and I still live at home.