Kat Dennings, Josh Groban Dating Rumors- Are The 'Rising Star' Host & '2 Broke Girls' Lead Together?

Are Josh Groban and Kat Dennings about to become the cutest couple in Hollywood? The 2 Broke Girls star and the Rising Star TV host were spotted getting pretty cozy with one another over the weekend at a charity event. The couple took to the red carpet where they were photographed staring longingly into each other eyes, and Kat was even spotted smelling Josh's neck.

The two attended the Carousel of Hope Ball, an event to raise money and awareness for diabetes, in Los Angeles over the weekend.

The rumored new couple stepped onto the red carpet looking ever bit high fashion. Kat wore an extremely low cut black gown, which accentuated her cleavage, and went without jewelry, but added a pop of color with her red lipstick. Josh on the other hand looked every bit as dapper in a black suit with a white shirt and black tie combo.

Yahoo was the first to post about the suspected new couple, saying that the "friends" looked a little bit more than that as they posed together for pictures.

The Wrap is also seconding that the two are just friends, saying that Kat went to the event to "support" her pal, who took to the stage to play three songs. Other performers included Jennifer Hudson and Babyface, with Jay Leno hosting the event.

E! News, however, just exclusively confirmed the news of the two becoming an official couple.

"They were so cute together!" an insider revealed to the site. "They were adorable on the carpet. She was whispering in his ear a lot and they seemed really happy."

Kat has been linked to her 2 Broke Girls co-star Nick Zano, where as Groban dated Mad Men star January Jones for three years.