<human>: We have dated for 5 years, and she's lived with me for 2 years now. When we were long distance, she didn't seem to worry about anything. But now we live together, and if we go out to eat.. She's drives herself crazy looking around at a girl she thinks I might find attractive. And first off, I have never cheated on any girlfriend I've ever had. I'm not that kind of guy, and I tell her all the time. I'm her first boyfriend though, so I guess she can't help it. 

I need to know what to do though. She cries and cries telling me she's afraid I'll like someone more, cheat, leave her ect. And I am honestly so patient with her and have been for these two years with this. I try to calm her down, and ease the anxiety and it works for a few days.. But then it's back again. She's afraid to get old, because she said she'll be ugly and I won't be attracted to her anymore, and I'll leave for somebody who is younger. 

I'm asking this on here now, because we planned on going to a movie in the park this weekend.. And she's scared. She thinks there will be pretty young girls that I'll be attracted to. I told her I pay no attention to other girls. I only want her and love her like crazy. Then it ended up in a fight. 

Can anyone please help me help my girlfriend? I am a faithful guy and would never hurt her. How do I make her realize this for good?

Can you give me a shortened version of the text?
<bot>: for 2 years my girlfriend has had crazy anxiety about me cheating or leaving, or leaving her when she's old for someone younger. I've never cheated and never would, but she had zero trust. How do I help her?