<human>: Can you provide a brief overview of the text?

Sorry for my english.

So I had a very complicated relationship with this girl. The start of the 
story, she is my officemate and we were a very good friends. I have a long time girlfriend and she have a long time boyfriend. We both have a problems with our current relationship and so we develop with each other and decided to have a secret relationship. I felt in love with her and she also in love with me. I decided and told her that I will end my current relationship with my real girlfriend and start a real relationship with her. But she told me she can't end her relationship with her real boyfriend because she loves more her boyfriend and we must end the secret relationship because it's the right thing to do. We ended our relationship and now I'm devastated and depressed. She told me that I have to move on and forget about her but I don't know where to start. I really really love her and I don't want to get over her. Since she is my offcemate, I always see her everyday and it really hurts.
<bot>: Got a secret relationship with a girl, that has a real boyfriend, we are both inlove but she chose her real boyfriend, ended devasted.