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

So me and my bf had a pretty good relationship up until last Christmas. We both had personal issues that made each of us very unstable. We broke up on bad terms only days later to find out I was pregnant. After a terrible month we ended up back together. When we were separated he began a relationship with a mutual acquaintance, a girl that hated me and was always jealous of me. I know that sounds really self centered but she truthfully went out of her way to be nasty spreading rumors and harrasing me with nasty phone calls. We got back together and i told him to cut it off. He said he would...he didn't. It wasn't until about a month later that someone informed me that they were still talking. What that consisted of im not certain but it makes me sick to think about. When I confronted him about it he admitted to some guilt but the whole truth came out slowly from him during the next week. I forgave him. I myself had been talking to different guys during this rough patch and I knew it was out of more fear than anything. 
Its been half a year since all this went on and I occasionally find myself thinking about it from time to time. Is this normal? Most days go by and it doesn't bother me one bit. Sometimes I have nightmares about it and I can't stop thinking about it all day. I love my bf and I'm happy with the way everything is working out we have both learned and grown from this experience. But sometimes when I think about that time I get angry and want to plot revenge.e and this person attend the same school part of me is afraid if I see her my anger will compel me to do something stupid. I've told him about these feelings and we've talked about it a lot...I just want to know eventually these feelings will dissapate. I'm about to have a baby and I have a lot to look forward to. We have a much more open and honest relationship yet I still feel bitterness surge up sometimes. Maybe at first we were motivated to stay together for our baby but now I can say we admire respect and love one another multides more than before.
<bot>: my bf cheated. I am commited to forgiving him  how do I let go of my anger and bitterness?