<human>: Can you provide a brief rundown of the text in within 3 sentences?

Backstory: GF and I have been dating for 3yrs. 2.8yrs ago I cheated on her. We were dating long-distance and it was before she had moved here. I was young, stupid, and to this day fully regret my actions. 6 months after it happened I told her, she was pissed of course, but still moved here. Since then I have been the epitome of loyal to her - she has free access to my phone/facebook/email/everything. She can "spy" on me all she wants. I have done absolutely nothing wrong since my initial messup. It was also the first and only time I have ever cheated on a girl, so it's not like I'm a repeat offender.

Fast forward to today: GF still doesn't trust me. I'm not allowed to text girls, and if a girl friends me on FB GF flips shit. I have a lot of cool co-workers at work, some of which are girls of course, and she automatically assumes I want to fuck every single one of them (I do not). Basically she has kept me from having any real relationships (ie true friendships) with any girls whatsoever. Literally the only girls I talk to extensively are: her, my mom, and my 2 sisters. 

SO, today we get in a huge fight. I point out she doesn't trust me, and trust is the foundation of a relationship. She claims she will try to trust me more, etc. etc. I challenge her by asking: Would you 'allow' me to go out to lunch with a girl? She. Loses. Her. Shit. "I KNOW YOU WANT TO FUCK HER OMG WHY CANT I JUST BE THERE TOO YOU WOULD PROBABLY LIE AND NOT EVEN EAT". I just dont know what to do to fix this. I've been perfect, lost all my friends that were girls in the process, moved 2hrs from my hometown, and we live together now - which makes things even more complicated. Please help.
<bot>: Do you think it's okay FOR ME to go to lunch with a member of the opposite sex, even though I cheated on my GF of 3yrs 2.8yrs ago?