My boyfriend thinks I’m jealous of his child?

I found out my boyfriend took his child’s mother out to eat and they went to a birthday party together he claims he only went to the party for his daughter and when they went out to eat it was not a date because there daughter was there. I have had problems with him coparenting in the past and I told him he shouldn’t be doing certain things with his child’s mother because he’s In a relationship now after we had this conversation he told me I just want him to be a deadbeat and I’m jealous of his child. How do I get him to understand that what he’s doing is not right?
My boyfriend thinks I’m jealous of his child?
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