Thanks in advance
Most Helpful Girl
She probably doesn't know what she wants. She is upset or sad you're moving on, but she knows she has no right to be. I would be sensitive to her and just stay polite to her. As for the cousin thing, why don't you ask your cousin about it? Make it known to your family member that you don't want them to have a sexual relationship, if that's how you feel. She is probably trying to flaunt a new relationship in front of you to make herself feel more disconnected from the situation of you having a new girl.
Most Helpful Guy
I would be very careful, all of a sudden she does this because there is another woman in the picture. Keep in mind your relationship with her its over so there are "new" boundaries she cannot cross, specially now since you have another person in your life.
Just because you have kid (s) doesn't mean she can do as she pleases. Just be aware and cautious. What her intentions might be. And make sure she respects your personal life, privacy and new relationship.