Me and my girlfriend have been going out for about 5 months now. We've been pretty happy but about a month into our relationship some other girl had came up to me trying to flirt, at first i was just trying to ignore her but she was playing dumb trying to hold my hand and hug me. I finally got her to back away from me but a friend of my girlfriend had seen me and got the wrong picture, thinking i was messing around with that other girl. My girlfriend heard and finally she believed me. But ever since, it has bothered her that if a girl were to try to push me to do something i wouldn't do anything to prevent something from happening. I know I wouldn't do anything like that. She tells me she can't trust me at all and I want to show her she can but I just don't know how. I've told her before that I can but i guess I just don't know how. She wants me to change quickly. I know i can be trustworthy but how can I show her the same??