First of all, we don't like to acknowledge it but gambling, even in it's smallest of forms, IS a big deal. I do praise you for managing to give it up for the past 6 months though, I imagine it's tough and takes alot of discipline. I'm not trying to act like an expert on the subject but i do have alittle something in common with your gf. I have dated guys before who would gamble on sports quite frequently, it never bothered me until it became such an obsession, that it was more important to them then me. I have also grown up with a father very very very addicted to gambling. He was so addicted to it, it literally cost him his wife, his home, his daughter, and his life. I'm not saying this is going to happen in your case, but i can understand where your gf is coming from, if she is with someone who gambles, eventually, in the future, it could be her life and security that is in the hands of fate and a stupid bet. If i were her, i would probably wait atleast a year before getting back together with you, to be sure that you're over it. So my suggestion is just to give her time to think this over, and if you ever get the urge to gamble again, ask yourself which is more important, her, or that bet?