<human>: Give me a shortened version of the text

We have been together for a while and this issue has come up a few times. I want to tell the story from the beginning so you guys can tell me if I am overreacting. 

We started going to a new restaurant and met the people that work there together. He went to the restaurant a few times without me because I was busy. The next few times I went I noticed one of the female workers was a bit friendly with him. I didn't say anything at the time. Since that time they have exchanged numbers and she added him on social media. The most she has ever said to me is that I am very pretty and the standard hello and goodbye. When she would talk to him, she would touch his arms and tease him. 

She moved away but they kept in contact and he had dinner with her and another male friend when he was in her town. 

I don't think that relationship was ok at all. She never once tried to be my friend and focused completely on him. I asked him how he would feel if some guy at a restaurant we went to focused his attention on me and ignored him. He told me to go ahead and he wouldn't give a fuck. Then he told me to shut it because he was done talking about the situation. He's always very upset and defensive when we talk about this. This isn't the first situation either but I want to know if I am reacting.
<bot>: a woman we both met at the same time befriended him while ignoring me. He doesn't think it's inappropriate or weird, I do.