way to run the family

When one of they guys/girls you either used to talk to or date starts talking to or starts dating someone else in your family.

“My ex girlfriend is talking to my cousin.”
“Wow, she’s running the family”
“Yeah, way to run the family”

It runs in the family

An expression to describe how sluttiness can be passed down through the generations, synonyms include: cock slap, syphillus, std concoction, and most prevelent: jox strap

60 year old pedophile: you can tell your daughter, it runs in the family.
30 year old blonde: What do you mean??
60 year old pedophile: I molested her Like I did when you were ten too!