The insider said Lady Gaga, 26, and Kinney, 30, are "on a break."
"She will be touring non-stop until next year and has found she can't have relationship at the same time," the source told the magazine. "There's just no room for anything else. Her work is all-consuming."
Kinney is best known for his work on TV's "The Vampire Diaries."
Notable deaths of 2014 [PHOTOS]