<human>: Condense the text into a few key points

I live with my girlfriend, and after a while everything got really shitty. She's constantly acts insecure and it makes her get pretty crazy. She's also super jealous. It's super unattractive, and it's made me think about breaking things off with her pretty often. It made her so unattractive to me that I despised sex with her.

Eventually I started messaging girls online and swapping pics. There was no emotional connection... It was purely an outlet for me. She found out and considers it cheating. I understand how she feels that way, but I never got any phone numbers or attempted to meet anyone. The best way I can explain it is that this was a form of porn for me. We talked it out and I agreed that I was wrong, and I wouldn't do it ever again. I even agreed that I wouldn't go to subs like gonewild or any websites remotely close to cams, etc.

Anyway, even when I feel things are going great in our relationship, she has to ruin a great day or moment by bringing up this past issue. I'm so over it. I'm literally tired of talking about it with her, because there's nothing left to discuss or say. How do I get past her insecurity? I want her trust, but I'm so tired of her constant need for reassurance. Keep in mind that her insecurity, jealousy, and lack of trust were issues before the incident. What do I do?
<bot>: Girlfriend is very jealous and insecure. I was caught messaging girls/swapping pics, and it made everything worse. What do I do?