<P> Luke has a crush on a girl, Sienna (Madison McLaughlin), and he asks for Alex's help on how to approach her without telling her who the girl is . Alex agrees to help him but Sienna is also the girl who Alex wants to make her best friend . When Claire tells her that Sienna is the girl Luke has crush on, Alex tries to keep him away from her . Their fight in front of Sienna just scares her away . </P> <P> In the meantime, Haley stayed back home to enjoy Jay and Gloria's pool thinking that no one is home, but Andy (Adam DeVine) the nanny is home, baby - sitting Joe . They run into each other and Andy tells her that she cannot use the pool since Jay and Gloria are not there . Haley does not care of what Andy says, and when she is lying next to the pool, Andy tries to collect proof that she was there . </P> <Ul> <Li> The episode title references the film An Affair to Remember . </Li> <Li> Harold Grossman sings Foreigner's "I Want to Know What Love Is". </Li> <Li> Claire gave Phil a plate of Planet of the Apes for their anniversary . </Li> <Li> Jay tells Manny that all bakers are girls, giving the examples of Betty Crocker, Mrs. Fields and Little Debbie . </Li> <Li> Cam says casting Russell Crowe in Les Misérables was a bad decision . </Li> <Li> R2 - D2 is mentioned by Phil . </Li> </Ul> <Li> The episode title references the film An Affair to Remember . </Li>

Who sings i want to know what love is on modern family