Lots to read, how can I forgive my girlfriend for cheating?

I will tell you one thing my friend, girls have their own way of doing things. Most of the time, you won't understand why they do what they do, but most of them have good common sense. If you love her, then trust her. You can't have a relationship without trust, no matter how hard you try. You have find a common ground with her. I know you're hurt, anyone would be. But like you, she has a right to have her own emotions and her own life. No ones heart is a total open book. Give this some time. If she loves you, like you love her, then things will work out.