Hilary Duff Kisses Boyfriend Matthew Koma During Tropical Getaway -- See the PDA Pic!

Hilary Duff and Matthew Koma are Instagram official!
The 29-year-old actress got steamy with her new beau for their first Instagram snap together, posted on Thursday.

Duff and Koma, who have been vacationing in Costa Rica, lean in for a kiss while touring a tropical jungle.

"????????," she captioned the pic.

The pair was first linked in January, just one month after the former Disney star split with trainer Jason Walsh. In a recent interview with Cosmopolitan, Duff revealed that she had been dating Walsh for a lot longer than their five months in the public eye, and that is was "serious."
"We were seeing each other for a while," Duff told the magazine. "People don't know the ins and outs of everything. It was definitely my first more serious relationship since my ex-husband [Mike Comrie]."
"I was like, 'F**k it. He's my boyfriend,'" she said about her decision to go public. "I just needed to make sure it was right. People don't need to know my business until I really know my business, you know?"
See more in the video below.