Whitney

After Mark breaks it off with yet another woman, he shares his personal theory -- explaining that couples know within 48 hours of meeting if they want to be together. Not surprisingly, everyone agrees that they knew they had met their soul mates within that timeframe except Whitney. Trying to prove her wrong, Alex takes Whitney on a trip back to 2008 and the night they first met. While reminiscing, it is discovered that Lily and Roxanne needed some special help to discover that they might actually like each other.

Trying out a new shapelier bra Whitney gets more than she bargains for when she entices Alex with her enhanced look. After Roxanne calls it quits with Lance, she asks Mark to help pack up his stuff, but things become complicated when Mark decides to take advantage of the situation. Meanwhile, Lily and Neal begin discussing a pre-nup, but the conversation leaves them wondering if they should even get married.

When Whitney (Whitney Cummings) finds a box of stuff from Alex's (Chris D'Elia) old girlfriend in the basement, she confronts Alex about it. Not satisfied with his answers she turns to Mark (Dan O'Brien) and gets more information than she bargained for.