Why Didn't I Forgive Him?

A friend of mine asked me last night, 'why didn't you forgive him when he cheated?'. I shook my head.

The real answer is that the last time I broke up my ex- was also cheating on me. But he chose the other girl and it broke my heart so badly that I didn't want to go on. I was afraid that if I forgive T and took him back, he will eventually dump me. And that I will be in deep s*!# over again. I never told anyone about this painful truth...up until now.