Kat Dennings and Josh Groban have split. (Photo: Getty Images) Cape Town ? Another couple bites the dust as Josh Groban and Kat Dennings have split after almost two years of dating. A source exclusively told E! "They are still friends and care about each other, but it?s not the right time now for them as a couple." While the couple may be going into the cold season single, their schedules are sure to keep them busy as Two Broke Girls returns for a new season and Josh Groban is set to star in Natasha, Pierre & The Great Comet of 1982 beginning of October.