New couple alert! Love is in the air for singer Josh Groban and actress Kat Dennings.

The new couple made their first appearance together on Saturday at the Carousel of Hope Ball for diabetes research, E! News reports.

While attending the ball together, Dennings and Groban were seen cozying up to one another and whispering in each others ears, an E! News source claims.

"They were so cute together!" said an E! News source. "They were adorable on the carpet. She was whispering in his ear a lot and they seemed really happy."

Following their appearance on the red carpet, the happy couple took to Instagram to share a photo of themselves at the ball.

Dennings captioned her photo "I ship it" while Groban echoed his new girlfriend's caption with "I ship it too."

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 I ship it.

  View on Instagram

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I ship it too  View on Instagram

In addition to Saturday being the couple's first public appearance together, Groban--who also performed at the Ball--revealed to Entertainment Tonight that his Hope Ball performance would be the first time Dennings would hear him sing.

"I'm very lucky my girlfriend has joined me tonight," Groban told ET. "It's her first time hearing me sing. So I'm going to do some extra warmups tonight so I don't suck."

Groban then went on to explain that he and Dennings spend most of their time together pretending to sing. Because of their playful relationship and non-serious singing, Dennings had yet to hear Groban sing for real, he explained.

"I mean, just kind of like, we joke sing all the time, you know, we just, we harmonize on the radio," Groban explained. "But no I haven't really done, it always seems like a cheesy move on my part. I don't really sing for her like, 'hey you want to hear me sing?' So it's nice that we can both come out and support and then also as an added bonus I get to sing for her also."

Dennings was previously linked to her "2 Broke Girls" co-star, Nick Zano while Groban previously dated "Mad Men" star, January Jones, E! News reports.