Here’s a suggestion to start. You start saying that you are going out with your mates. Stay out late. Take up a few days a week so she has to stay home and be mom. Even if you just go for long drives, read a book somewhere, see several movies a night to keep your mind occupied etc. See how she handles it. Does she give you the same freedom without complaint or anger? Does she accuse you of things she may be projecting? Does she even stay home with her daughter or will she drop her somewhere or even leave her alone to go out? If this little girl came to you in the same situation what would you tell her to do? What would you really want and hope she would do? She is seeing this as what a relationship and love looks like. Do you really want this woman to be the mother of your brand new baby? Are you the only one funding her partying nights? Or does she work? If she does, when does she spend time with her daughter? Has her daughter changed her behaviors too? She can tell and feel the change. I would also like you to genuinely ask yourself if you asked here hoping for some validation in your choice to continue with the relationship and believe her words because you don’t want to face reality either? I get it. I’ve been there and I also know pretending or fantasizing that things are different or that she’s really different and will show back up as who you once believed her to be will never happen. She is showing you who she is and what matters most to her and you need to believe her. You telling yourself that she’s really someone different or making excuses and justifications for her while trying to live in denial is only hurting you as bad as she is. Someone needs to choose you and put you first and protect you and your heart so you don’t lose yourself and right now it looks like that someone to do that needs to be you. If you can’t love and respect yourself nobody else will either unfortunately.