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

I've been with my girlfriend for 5months, previously, we were dating for one months before I broke up with her for selfish reasons. During the time apart, I had sex with 4 women, two of which she knew. She ha sex with three men, a short term boyfriend, my best friend, and another mutual friend. 
   I don't blame her for any of them because I broke up with her and really hurt her, but now she is upset because she is finding out about the things I did while we are apart (she asks I tell). I did anal with another girl and she says I disrespected her because it's something she would only ever do, and did with me. Among other things. Mainly  she is upset that a) I broke up with her, and b) I hooked up with other girls and did things to disrespect her.
     I have apologized frivolously and she says she loves me for who I am now but there is still a lot of pain. It's the biggest regret of my life to treat her like that it was a long time ago when I was a teenager not that that justifies anything. I'm not looking to be scalded on my idiotic decision to end things with her, I'm simply looking for things to help us get through this
<bot>: Girlfriend is angry about my past decision to break up with her to sleep around, we are back together and things are great, but she is still upset and finding out things I did while apart.