Kinney was born in Lancaster, Pennsylvania in July 1981. He became known for his recurring role on The Vampire Diaries as Mason Lockwood. More recently, he has starred in the movies Zero Dark Thirty and The Other Woman.
Since 2012 Kinney has played Lieutenant Kelly Severide in Chicago Fire and has made appearances in spin-off shows Chicago P.D. and Chicago Med. But it was portraying a mad scientist in one of Gaga’s music videos that saw him begin a long-lasting relationship with the singer.
Gaga and Kinney announced their engagement in 2015 after being together for four years. She shared a photo to Instagram that showed the heart-shaped diamond ring the actor had proposed with. “Love is love is love,” the singer wrote in the caption.