Amanda Seyfried dating Thomas Sadoski

The 30-year-old actress and "The Newsroom" star first became friends when they co-starred in the Off Broadway play "The Way We Get By" last year.

They recently reunited on the set of their new movie "The Last Word", and their relationship has since become romantic, reported Us Weekly.

"Amanda and Thomas are definitely dating right now. She's no longer single," a source said.

Sadoski separated from his wife of eight years, Kimberly Hope, in October last year.

The stars have yet to comment on the romance rumours.

Sadoski, 39, isn't the first co-star Seyfried has dated off-screen. She previously romanced "Mamma Mia!" actor Dominic Cooper from 2008 to 2013, and she most recently dated actor Justin

Long, but they split in September (15) after more than two years together.