My boyfriend is terrified of becoming just like his brother...

Let’s get straight to the point: his brother is an ass. He doesn’t respect women, his family, or anyone! He’s a giant man-whore. He does so many stupid things it’s not even funny anymore :( He steals from his own mother and everything! He’s been in jail a few times now and continues to do the same things over and over…

My boyfriend sees only that his brother used to have a similar relationship with an ex that he and I have now. He says his brother used to be an amazing person and thinks that everything bad that his brother does can be linked back to that past relationship…he’s terrified about possibly screwing things up with me, and BAM! His life is in the gutter like what happened to his brother.

I don’t know how I can convince him that he is not like his brother and that one little screw up for him will not make him throw his life away…I think he has more will power and belief in himself than his brother and he knows how to handle things better… But how can I convince him that yes, it will be okay? I don’t want him to change, he doesn’t want to change, I don’t think he could ever be as bad as his brother is…but he thinks it’s his destiny to become that way no matter how hard he fights it! He thinks he’s doomed. I just really wish I could help him to stop thinking this way… any advice?