['I broke up with my abusive boyfriend of five years.', 'Thats good. Abusive relationships are the worst.', 'They are. I was ashamed that I had stayed in that relationship for so long. But, I met someone who is the complete opposite of him.']
Great! You deserve it!
I felt ashamed when I had finally broken up with a boyfriend of five years.  He was abusive physically and mentally. I was not ashamed that I broke up with him. I was ashamed that I had stayed in the relationship for that long.