Amanda Seyfried engaged to costar Thomas Sadoski

Congrats, Amanda Seyfried and Thomas Sadoski!

The pair is engaged, Seyfried's publicist Evelyn Karamanos confirmed to USA TODAY, after a whirlwind romance that began this spring.

The two actors started dating while filming their upcoming drama, The Last Word.

Seyfried, 30, and Sadoski, 40, first met on Broadway in 2015 as co-stars in The Way We Get By, a Neil LaBute play about a one-night stand.

This will be Seyfried's first marriage, with the star previously dating Justin Long for two years before their split in September 2015.

Sadoski, currently starring in CBS' Life in Pieces, filed for divorce with his previous wife of eight years, Kimberly Hope, in fall 2015.