Is it bad that I'm giving my ex-boyfriend another chance?

I was in a relationship with him for three years. My mom doesn't like it because she thinks I'm making a mistake. He got married a few months after we broke up, and now he is divorced. I forgave him for what he did in the past, and he says he's sorry and he really loves me. I love him too, but is it bad that I'm giving him a second chance again?