And I don’t mean stepkid boundaries, I mean DHs ex!!!

DH and ex were together 12 years, never married, a wedding kept getting called off because of ex cheating. They split when SD8 was around 2yo. 

There are no normal boundaries between them. It’s driving me up the wall. Especially now we have baby son and I don’t want him involved in all the codependent weirdness. There definitely isn’t anything *going on* between them but it’s just not right.