Chad Michael Murray and Sarah Roemer are first-time parents

Married actors Chad Michael Murray and Sarah Roemer have become first-time parents.

The Chosen co-stars have welcomed a baby boy, and Murray took to Twitter.com to share the happy news with his followers on Sunday (31May15), writing, "We've been blessed with a son. Sarah & I couldn't be happier."

The former One Tree Hill star began dating Roemer last summer (14), weeks after splitting from the couple's Chosen castmate Nicky Whelan in May, 2014.

Murray, who confirmed their marriage and pregnancy news in January (15), was previously married to his One Tree Hill co-star Sophia Bush in 2005, but they split after five months as husband and wife. Their divorce was finalized in 2006.

Roemer, best known for her role in 2007 thriller Disturbia, was once linked to Will Kopelman, who is now married to Drew Barrymore.