Actress Anne Heche and her former Hung costar Thomas Jane are dating.

The pair, who recently opened up about their relationship in the German magazine Bunte, first sparked relationship rumors earlier this year.

A source tells PEOPLE that the couple began dating this spring.

“They’ve been friends for so many years and they’re so like-minded that it’s an incredibly easy relationship,” the insider says. “They’re really supportive of each other and have a lot of fun — they’re definitely in love.”

Heche and Jane, both 50, were spotted attending a Tribeca Film Festival event together in early May. A source told PEOPLE at the time that they “arrived at the afterparty holding hands.”

The two also attended the Sarasota Film Festival in Florida in April where Heche was honored with a Career Tribute Award.

Jane and Heche previously worked together on the HBO series Hung, which ran from 2009 to 2011, playing a divorced couple. Jane starred in the series as Ray Drecker, a struggling single father who resorts to prostitution in order to make ends meet.

The actors will also be reuniting on screen for their upcoming thriller film Hour of Lead, which follows the story of a husband and wife who will stop at nothing to find their missing daughter.