Their chemistry on set is no joke!

According to a new report, Amanda Seyfried, 30, has started dating her The Last Word co-star, Thomas Sadoski, 39.

“Amanda and Thomas are definitely dating right now. She’s no longer single,” a source tells Us Weekly.

RELATED: Rob Kardashian Proclaims Love For Blac Chyna on Instagram – and Calls Out His Haters

The pair first became friends when they starred in the 2015 off-Broadway show, The Way We Get By, and reconnected while shooting their new film.

amanda seyfried thomas sadoski getty images

But the duo have more in common than their resumes. They both just got out of long relationships. Amanda called it quits with Justin Long in September after more than two years together while Thomas split from wife of eight years, Kimberly Hope, in July.

The blonde beauty previously opened up about the struggle of maintaining a relationship in the industry, telling Vogue, “Making movies is two solid months of 12 [to] 14-hour days. I mean, it can ruin your relationship.”