<human>: Provide a brief overview of the text.

In the first couple of weeks of seeing my girlfriend I went out, got drunk and kissed another girl. She asked me the next day if I had done anything  when I went out and I told her outright. I said that I didn't yet think of us as being an item and I was sorry. 

A couple of weeks later I went out with a friend and did the same thing (with another stranger), I felt terrible and couldn't bring myself to tell her. 

This all took place up until mid December, we met at the end of October. 

We went away on holiday together after new years and when we came back I truly felt that I loved her and wanted to be with her an only her. 

I knew that she had kissed a guy on the neck at a new years party and pushed him away.

 I said that I wanted to get everything out in the open and I wanted to be honest and trusting of each other before we moved forward. I told her that I knew what she had done and that it was ok, I could understand. She said that she thought the only reason I was so ok with this was because I had done something I hadn't told her about. 

I then proceeded to tell her everything and she said she couldn't be with me. 

We talked in the car for six hours and left on uncertain terms. 

I had never been in a serious relationship before this and I guess my years of going out on the town took some getting out of my system. I feel terrible for having hurt her and having no control. I don't know if anyone will pass comment but I have no one else to talk to about this and I feel terrible (I understand that I deserve this and I have brought it all on myself).
<bot>: never been in a relationship, went out got drunk and kissed other girls on two occasions, realized I loved my girlfriend deeply after returning from a holiday together, told her everything, thought we could work it out, looks like shes gone