I shouldn't tell you this, but I cheated and I don't feel guilty.
What's going on with you?
It was the best decision of my life and I feel so great and happy. I do not feel sorry.
While the person you cheated on may not be a great person, it is still wrong in general to cheat. Two wrongs do not make a right. Instead of cheating, simply breaking up with them would have been the more moral way to do it.
It had to be done. She simply did not care for me.
It sounds like you two are past the point of no return. At this point, you should initiate a separation. Cheating will only prolong the misery.