Is it appropriate for baby daddy and his new girlfriend to stay the night at my house?

My baby daddy is mad bc I told him that him and his girlfriend can’t stay the night at my house this weekend to see our daughter the next morning bc my fiancé thinks it’s inappropriate. I’ve tried setting times for him to come see her and he always shows up late around the time she should be going to bed. (She’s 15 months old). He argues that I’m denying him from seeing my daughter and that my fiancé is a jealous man with a fragile ego lol. He thinks that our opinions aren’t enough and that this situation would be completely appropriate. What do you think? (Bonus points if you comment what the men in your life think bc my baby daddy also hates women so a man’s opinion might actually get through to him.)

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