Wow shocking

Today BM drops stepdaughter off. We were hanging out for a bit and then she went in the living room to see grandma(bf's mom). Well his mom came to our room and told us that daughter told her she had something to tell her but she wasnt supposed to tell her. His mom then said you dont have to tel me then and daughter said well im going to. Daughter told her that she went to the fair this weekend with her mom and her bf and even said his name. Her mom is married and has a bf. So my bf was giving her a bath and asked her about going to the fair and she said she wasnt supposed to talk about it because her mom said so. He told her she is allowed to tell him because he is her father. So she told him the same thing she wwnt to the fair with mom and her bf. This isnt the first we have heard about this guy. Its sickening that BM is showing her daughters this example of relationships. If your going to cheat do it privately dont involve your kids in it. Her husband is such a nice guy and has always taken care of her and her kids and this is what she does. She cheated on my bf after she had his daughter with her husband and then got pregnant by him married him and not even a year into their marriage and shes cheating on him. What is wrong with this woman. On top of that she wants our little girl to keep her secrets. i just cannot deal with this woman anymore she is such a narcissist only caring about herself and having kids by different men to collect child support so she has money for herself. Sorry for the rant