Ok guys, haven't posted here in a while unfortunately. But was trying to escape the PUA life and stay away from temptation of going back to that lifestyle, sadly i think you guys are the only ones who can help me.

Things began to happen with me and my girlfriend January time, she was still dating but not happy in the relationship. We were in university together, saw each other daily and got very accustomed to seeing each other.
Then things ended with her and her bf. and in April we got together after several weeks of dating. In this time I had to spent a lot of time in Comfort stage, as she has a lot of issues due to previous relationships, and guys trampling all over her. Certain events had happened also in regards to family deaths etc which effected her great deal because of the closeness they had. Anyway, got myself around there i thought.
We would sometimes argue over stupid things but always end up sitting down, talking it through and sorting it out. We both feel strongly for each other and i believe her when she says she thinks she loves me.

Now, in the last few weeks something has cropped up.. For several months we had been friends with a group of girls. Just friends i thought until one of the girls said i was attractive (call her G1). My gf found out she said that and became paranoid about her steeling me away. I don't find G1 attractive in anyway and assured my gf she had nothing to worry about.
But as G1 is one of my friends i cannot avoid her, i know my gf would like nothing more than me not to hang out with her but I'm not going to do that.
Then suddenly out of nowhere it one of the other girls in the group (call her G2) has now said she likes me, really has for along time (before i got with my gf). Since university has ended, and my gf moved back home. its a LDR but i can drive there in an hour or so, so no that LD.
But as my mates are closer, i hang out with them more often, and G2.
As I'm more around G2 I feel myself getting attracted to her, my friends have warned me about the situation cause it could split up friendships etc. Though, when im around her it just clicks. Anyway we went away for a while with mates and mistakes were made. Now so many scenarios are running through my head, which is the better girl, etc.
I have strong feelings for my Gf, more than G2, but as im spending more time with G2, they get more deep..

Then this weekend i argue with my Gf because i didnt tell her that i went camping with G1. My gf is friends with G2, and has no idea that she is into me. Anyway, she gets mad cause i didnt tell her G1 was going and she's paranoid that this LDR, sorta, is going to end up in G1 seducing me and things falling apart. i obviously assured her that i wouldnt. I have told her about my history, and the amount of girls i been with etc as when we was dating she was uncomfortable with the amount of attention i got off other girls, and the amount i know. This is also my first real gf in 2.5 years or so, and i made a big mistake telling her that i would probably find it difficult to stay faithful. I was coping fine until G2 told me she liked me..

Because i told her that, and because i been spending time around G1 she's afraid I'm going be unfaithful with her with G1. She's convinced herself that G1 has feelings for me, even though she hasn't! Its G2 that has feelings for me, and she has no clue.

I'm at a loss with women for the best part of 3years currently. So much running in my head.
What should i do. My gf has serious trust issues, and with the LDR, and me hanging out with my mates (who include G1, G2), she is really insecure and afraid i think.
The more time i spend with G2, i feel attracted to her. Can't avoid her due to us being mates. The more time i spend away for my gf, and her trust issues i feel less attracted.

Sorry for the long post guys, im sure your heads hurting, i can assure you mine is too!

Il clarify anything, anyone asks, i was probably unclear most of the time due to me just typing the basics.

Any input of any kind would be helpful. Im meeting my gf on Monday to discuss things. Peace!