my 2s found out I was cheating on her, we had a massive row. things have calmed down a bit but I had to explain that when we started our relationship, as good as it was, I wasn't prepared to commit long term as I felt I had a few more things I wanted to try and do before settling down forever.
thankfully she has forgiven me and we don't argue as much, but she now sleeps in the other room and I don't really see a lot of her.
oh, and it keeps the H2S on her toes and she is constantly finding new ways to please me .....