Brantley Gilbert and Jana Kramer Call it Quits

Country sweethearts Brantley Gilbert and Jana Kramer have called it quits.

According to someone in the know, Brantley and Jana blame their careers for the break-up. The insider told People magazine,

They are both so busy right now. They are both on the road and have to spend a lot of time apart, which isn't ideal for any couple, let alone a couple trying to plan a wedding."

The source also says that Brantley and Jana were happy together, but know the split is for the best.