D-squared - who recently had Rihanna work the catwalk for them at their spring 2008 show during Milan Fashion Week – should look to the latest Fused Celeb couple (I'm going with Fupple from now on) for their next runway extravaganza. Who could we talking about ? J-cubed. Of Course. As Starwatch reports today the internet is rife with . … speculation that singers Joe Jonas, 18 and JoJo are dating! The 17-year old "Leave" singer was spotted having dinner with all three Jonas Brothers and their bodyguard. They totally make a cute couple … It's J to the power of four and all the o's you can fit in a bowl of Cheerios! Breakfast is the most important meal of the day.