Am I wrong

My child’s father had cheated on me my entire pregnancy. To make a long story short he and this person are moving in together and I’m insisting that I don’t want my baby spending the night with them until we all have a sit down. He keeps insisting that it’s not necessary.

I’ve met her before but it’s different since I know they are getting a place and my son will be there. Am I wrong to want the address and tell them my boundaries when it comes to my 5 month old baby. I don’t want her changing his diaper or watching him unsupervised. She is very insecure she makes him share his location when he comes here to get his son, I just don’t feel comfortable about having someone that possessive and insecure alone with my bby.

Please tell me if I’m being unreasonable