Shameless (2004)

S4E3 Episode 3

Monica successfully enchants Frank and reestablishes their connection, but he feels compelled to keep their affair a secret from Sheila. When wronged, Sheila becomes a formidable opponent, putting Frank's safety at risk. Both women are unwilling to share him, forcing Frank to confront the difficult choice of which wife he truly wants to be with. The question remains: who will he ultimately choose?