Yep this happens all too often. Sexual predator types often target single moms, because they want access to her kids. A sad fact of life single moms need to be aware of. They meet this guy he romances them , then mom invites him to move in with them. Then things happen.
It’s logically a bad situation. If the guy is physically attracted to mom, it stands to reason he’s attracted to a biological daughter. Mom’s boyfriend probably shouldn’t be left alone with a girl that age.
Works every time it’s tried! Grrrr!
Women are so dumb. I mean, we really can be.