In fact, despite differences in their personalities, the Chicago Fire star seems to suggest it was simply meant to be.
"I'm reserved. She's not. For whatever reason, it works," the 32-year-old actor told E! News' Jason Kennedy at NBCUniversal's Golden Globes afterparty in Beverly Hills on Sunday, Jan. 12.
He added, "It works and that's that."
And while Mother Monster's handsome beau might say he's a bit reserved, his girlfriend did tell Ellen DeGeneres last November that her man is a "hidden weirdo."
She playfully revealed, "He is extremely strange, actually, and we complement each other's weirdness."