I have had anxiety for many years now, I am now 21 living with my boyfriend of 1 and a half years. Currently, I am in our room crying and he is out in the lounge. I am thinking about breaking up with him, but I really don't want to. Heres the situation:

I was cheated on by my ex and have had girls flirt with my current partner before. So I am a bit nervous about other girls. We both started christmas work a few weeks ago. He met a girl at his work about 2 weeks ago. On their first time working together they planned for him to go over to her house and she would cook him a curry and then they would watch a movie together. I was not invited and they we're going to be alone. I was not comfertable with this I explained to him I didn't want that to happen unless we went as a group. He said no and that I didn't trust him and he was going to do it because they are friends. I wrote him a letter asking him not to do it as I found it weird and made me uncomfertable, he talked to the girl and THEY agreed not to do it. This was about a week ago. Today he came out and said they we're going to meet up and go shopping tommorrow. I asked exactly when he was planning on telling me and again said this makes me uncomfertable as they have only worked together 3 times and they are already making plans and acting really keen on each other. I told him how I felt and explained why. A few minutes later, to my horror, he had posted the whole thing on facebook and asked people for advice on how to convince me it was okay. I had people laughing at me and I was so shocked to see that he would post our private conversation on facebook. I told him this was not okay and said he was horrible for posting that. He said that he didn't care and is now sleeping in the lounge.

I have told him we are pretty much over and he said he is very sorry. I don't weather I should leave or stay.

Advice please?