Her plans are ruined – and she has to hide to avoid being seen—when he arrives home with Lucy.Emma assumes Adam has a new girlfriend and tearfully drives away.The next morning, he wakes on a sofa wearing nothing but a small towel.It turns out that he texted Emma and then came to the apartment she shares with some other residents—Patrice (Greta Gerwig), Shira (Mindy Kaling), and Guy (Guy Branum).Once there, he took off all his clothes and then passed out.
The end credits show an epilogue in which Alvin and Lucy are in a relationship, and are in a restaurant waiting for Adam to arrive to tell him.
The two have sex again at Adam’s house and before she leaves Adam agrees to her proposal for a casual relationship (as she puts it, using each other for the dirty and nothing else).
Adam warns Emma about falling in love with him, but she dismisses the idea and sets ground rules to keep what they’re doing from becoming too serious.
She tells Adam that she is sorry she hurt him and confesses that she really loves and cares about him and they reconcile.
After eating breakfast together the next morning—something that never happened before—they arrive in Santa Barbara just before Katie's wedding is starting.