It's Wedding-Gate in the Summer House as Lauren confronts Carl for lying about bringing a date to a wedding. Kyle dips his toe back into the ex-pool, despite everyone's warnings. And Lindsay and Cristina's roommate drama boils over into full-on name calling and accusations at a lavish Hampton's party.

The roommates go from blowing out candles for Kyle's birthday surprise to a blowout fight that derails everyone's good time and leave Lindsay and Everett on the brink of a breakup. Meanwhile, at Model Volleyball, Cristina serves up some juicy gossip that Jaclyn hasn't been a model friend to Lauren. And at long last, the Wirkus parents meet the infamous Carl.