Caroline invites Andy over for a booty call, but when she thinks about having him over for sex again the next evening, Max questions whether she might still have feelings for her ex. Meanwhile, Caroline develops a mysterious rash in her nether regions, and a Web MD search convinces her that Andy must have given her herpes. She and Max pay a visit to a free clinic in order to get an STD test. Max also tries to help Han with his online dating.