Was What We Did Wrong?

A few months ago my cousin Carla found out her husband was cheating on her and they got a divorce. I always had a good relationship with her. We always talked about everything. She was depressed so I stayed with her for a few days and one night she was crying so I laid next to her and hugged her then she kissed me on my cheek then on my lips. I told her we shouldn't do this but she said it was ok she wouldn't tell anyone and it would make her feel better I'm not sure how but she was hurting and I wanted to help her feel better. We took off our clothes and she started sucking on my dick and stroking it at the same time then I started to eat her pussy it was soft and wet I liked the way she tasted. We both had an orgasm. We never talked about it again after that night. Sometimes I feel like what we did was wrong but for some reason it felt right. If I could do it all over again I would. I decided to tell this story to see what other people think about what my cousin and I did.