Dirty Tressey

A Dirty Tressey is when you're in either a relationship or engaged to her and she acts like a good girl but secretly screwing at least 2 guys behind your back and can never set a wedding date.And one of the others she's screwing is a married man.When confronted denies everything.

I was fucking this woman behind my wife's back, but no worries the girl I was screwing was a dirty Tressey shes engaged so it wasn't anything serious easiest lay ever.