DIDDY'S 16 YEAR OLD SON JUSTIN'S GOT A NEW GIRLFRIEND . . . WHO MADE OUT WITH TREY SONGZ!!! (EXCLUSIVE PICS)

January 17,2011 Diddy's son Justin's got a new girlfriend. And he's not dating just ANY ONE CHICK!!

Remember that 15 year old girl that R&B singer Trey Songz pulled on stage and started MAKING OUT WITH . . . well,that's Justin's new chick!!!

Why do we get the feeling hat we'll be seeing A LOT MORE of this couple in coming days. . .