<human>: My girlfriend's ex boyfriend from two years ago recently passed away from drugs and alcohol. At first when she described him to me prior, their relationship being toxic, and he sounded like a terrible person. He was physically and mentally abusive, an extreme alcoholic (drinking from morning until night), and broke up with her countless times in their 6 month relationship. When talking to her about him, she said she had gotten pregnant, he made her get an abortion and broke up with her. She moved back home to NY, visited him a year later only to find out he was seeing someone else, so she left. She made a few remarks I don't know how to react to. 

She told me (current BF of 9 months), She regrets getting an abortion, she should've stayed with him and maybe this wouldn't have happened. She now also describes him as a wonderful person. All the while I'm sitting here like "what about me? you and I wouldn't be together!"

Can you provide a brief overview of the text?
<bot>: How would you react to your significant other saying he/she should've stayed with their ex? Should I be upset and question my worth to her? Am I being insensitive?