Nip/Tuck
Cliff Mantegna
S1 E7:
When Julia surprises Matt having sex with both Vanessa Bartholomew (recurring guest star Kate Mara) and Ridley Lange (recurring guest star Sophia Bush), she humiliates him by demanding an intervention with Ridley's nonplussed mother and Vanessa's outraged parents, who didn't even know that Vanessa is a lesbian.
Starring
Kate Mara, Sophia Bush, Gerry Becker