After Whitney catches Alex checking out a hot girl she begs for him to admit to his wandering eye, but much to Mark's delight Alex won't fess up. Whitney decides that the best punishment for her boyfriend is the silent treatment. However, she soon realizes that Alex is enjoying his sentence and she begins to plot a new misery making tactic. Meanwhile, Roxanne, in hopes of making her ex-husband jealous, teams up with Lily and Neal to throw a fake party so that she can take sexy photos to post via social media.

Movie night at home for Whitney and Alex ends up as a competition with each other to see who can be more romantic. Meanwhile, Lily is on edge with anticipation that Neal might propose at any minute causing Mark to embark on a mission to prove that women are more eager to tie the knot then men.

After an argument over whether or not Alex uses a condescending "tone," Whitney decides she is going to catch her boyfriend in the act and enlists Mark's help. The two scheme to set up a hidden camera in the couple's apartment. Lily, Roxanne and Neal gather around the television to watch the drama unfold. Later, Alex's brother Brian crashes on the couch, and old sibling rivalries come to the surface causing the two brothers to brawl.