answer: Lily asks #Person1# to sing first. She recommends the Backstreet Boys, but #Person1# refuses.
documents: #Person1#: Who wants to go first? Lily?
  #Person2#: Oh. . . I mostly just like to listen. You're the groom. Why don't you go first?
  #Person1#: OK. Put on something by the Backstreet Boys!
  #Person2#: How about As Long as You Love Me? You can pretend you're singing it to your fiancee Brooke!
  #Person1#: I'd better not. Brooke hates the Backstreet Boys!