Pop star Justin Timberlake insists his relationship with Cameron Diaz is perfect the way it is and that they don't feel the need to get married. The SEXYBACK singer appeared on THE TONIGHT SHOW WITH JAY LENO last night (19SEPT06), and the talk show host asked him if he is ready to tie the knot. Leno began by asking about Timberlake's choice of album title - FUTURESEX/LOVESOUNDS - and tried to discover the meaning behind the name. Leno asked, "So what is your future sex? Any marriage thing going? How's that thing with Cameron?" Timberlake pretended to be shocked saying, "Marriage?! That's the thing about that - we like having sex! Why would we want to ruin a good thing and get married?" When the audience reacted, Timberlake tried to cover by saying, "Bad joke! Bad joke!" Leno insinuated that Diaz might not appreciated the joke quipping "You won't be laughing when you get home!"