Mike and Molly have the house to themselves, and they're excited about the opportunity to have sex without people knowing, however they keep getting interrupted. Carl is going to Christina's house for the first time. She's making him dinner and he predicts that this is going to be their first night together. Christina's son calls and she has to sing her good night song to him and Carl is deeply affected by this. He ends up running out of the house without consummating their relationship. The next day she confronts him in Abe's and they essentially break up. However, later at Grandma's house, we learn Carl was abandoned by his mother when he was 6 and he's got issues. Carl and Christina end up getting back together.