<human>: So I'm currently pregnant so its possible I'm reading too much into this but he seems to enjoy making me angry? For example, today we were talking and his best friend has recently started dating a girl that he has a history with. Even though she is dating his friend and we're about to have a baby she is still over him and has tried to hook up with him in the past months. He's told her no but it hasn't stopped her from trying. Recently she's backed off a little and is trying to be more of a friend to him and he says that I need to just "get over it and get along with her." I don't start fights with her or yell at her I just refuse to be her friend or be around her as I have no desire to keep her company. He mentioned that she invited him to come to some child expo with her (while I'm at work) and he said he didn't want to go without me (for fear that she would try something). And I said that was probably for the best because it would've upset me if he went. Then he responded and said that made him want to go with her just to piss me off because I have no right to get upset. I don't understand why he would want to do something like that to intentionally hurt me. It wasn't like I lost it and "forbid" him from going,  I just said it would upset me. Am I overreacting and shouldn't have said that or is he just being an asshole because with my hormones I cant tell anymore.

Could you distill the essence of the text into 1-3 sentences?
<bot>: Boyfriend wants to go to an expo without me, but with a girl he has a history with after I tell him it will upset me.