<human>: We are in a relationship for more than a year, we were friends with benefits before for some months. Generally things are great. I love her and helped her get out of depression and progress in her life. I have never seen her so happy and calm since i met her. She is a really attractive girl and many guys try to go out with her, which is often a reason why we fight, because she tries to avoid them but never tells them to stay away from her, so they always come back. Some days ago she went on a short holiday on an island where her grandparents live.

 Today, while we were talking on the phone she told me that she will go for a walk and will call me back in half an hour. About 2 hours later she texted me and told me that she is sorry and that she found an old friend and went for a long walk or sthing. I asked her who that friend is. she replied that she and this guy had kissed before I met her.

She said she is sorry she lied to me, but if she told me over the phone while we were talking I would be really angry and some other nonsense. She then told me that she texted him to meet up but she expected that she would be with her friends while they were meeting. Afterwards she said they just walked and that she was really bored. She didn't seem to think that i would mind much.

I told her that I can't accept those kind of lies and that we have discussed these situations before, so I can't believe she behaved that way.

I am sure she didn't cheat on me, which may sound stupid but let's leave it to that. I think I know her well enough to be able to understand if she is hiding something.

Totally thinking about breaking up with her, still want to hear some other opinions until i am completely calm and make my decision.

Summarize the given text in a few sentences.
<bot>: GF told me she would go for a walk, texted me hours later saying she went out with a guy she had kissed many years ago, and that they just walked.