However, there is not much evidence to prove the rumors.
The couple has been together for years, and they certainly seem to be quite happy.
He to the movie as a "passion project for everyone involved," and he was clearly enthusiastic about taking on a role that was very different from anything he had done before.
He is known for playing Jacob Black in The Twilight Saga film series based on the novels of the same name by Stephenie Meyer.
Rumors first started swirling about a possible romance between the two when they attended a wedding together last month looking anything but just friends.
In a 2010 interview with Ladies' Home Journal, the musician was asked to name a crush and she didn't hesitate to.