The couple, who began dating in early 2014 after meeting on the set of the Crackle drama, are also expecting their first child together, reported E! online.
"Chad and Sarah are extremely happy and excited, and enjoying their life together. We please ask that their privacy be respected at this special and personal time," Murray's representative said in a statement.
This is the first marriage for 'Disturbia' star Roemer, 30, and the second for Murray.
Murray was previously married to his 'One Tree Hill' co-star Sophia Bush and also engaged to Kenzie Dalton.