The Bride He Bought Online (2015) online

What starts out as a harmless prank blog takes a dark turn for 17-year-old Avery when her friends, Mandy and Kaley, create a fake profile for an international dating site and begin to communicate with a lonely, socially inept computer programmer named John. Having lived a life of isolation and bullying, the humiliation he feels when he realizes he's been duped unleashes a wrath that no one would have expected.