Nick Jonas has set gossips' tongues wagging after locking lips with singer Tove Lo in his steamy new video.

The pop star, who has been romantically linked to actresses Kate Hudson and Lily Collins since his split from beauty queen girlfriend Olivia Culpo last year (15), has sparked a new love rumour.

In his new video for Close, which Jonas posted online on Friday (25Mar16), the singer shares a sexy lip lock with his duet partner.

The song details Jonas' commitment fears after having his heart broken, prompting suggestions the lyrics are about his break-up with Culpo.

Shortly after the video hit the Internet, Tove Lo alerted fans to the promo, tweeting, "Song's out. Now here's the video."

"What an honor to be part of my crazy talented friend @nickjonas' new single #Close," the 23-year-old added.

Jonas and Almost Famous star Hudson previously played down the romance rumours swirling around them following apparent date nights and winter vacations together, and Collins' father, rocker Phil, dismissed reports his daughter was dating the singer.

"I'm not sure what Nick looks like," the 65-year-old Against All Odds singer told Yahoo! "But Lily called me the other day and she was in Mammoth where all this was happening. 'I'm here with a friend,' she told me, and said, 'It's not serious. It's just friends'."

The former Jonas Brothers singer has been romantically linked to a number of famous women in recent years, including Miley Cyrus, Selena Gomez and Delta Goodrem.

Close is the first official single from Nick's new solo album Last Year Was Complicated, which will be released on 10 June (16).