I upset my girlfriend about two months ago, and I just said it straight. I said I was naive, what I did was an ->-bleeped-<- thing, and I didn't mean to ever hurt her. I reassured her that she was the most important thing to me and that I realise now that what I did was so stupid. I definitely don't want her to hurt and I want to do everything I can to fix the fact that I did hurt her. I also made sure to tell her that I understand if she can't forgive me, and that if she is done, I understand, I just want her to know I didn't mean it. I made sure to include that her feelings are valid too, and her feelings are justified. Don't ignore how she feels or put her down, try to understand how she feels and open up the conversation so she can tell you.