Julianne Hough and Chuck Wicks have decided to call it quits, a source tells PEOPLE. "This was mutual. They needed some time apart," says the source. Hough, 21, and Wicks, 30, both are still expected to attend the Country Music Association Awards on Wednesday — Wicks is covering the red carpet for "Entertainment Tonight" and Hough is a presenter. The two walked the red carpet together for the first time at last year's CMA Awards after getting to know each other while touring with Brad Paisley. Within weeks, they already had marriage on the mind, with Hough telling PEOPLE they "definitely" wanted to go to the altar someday."The minute we met it was perfect," Hough, a country singer and "Dancing with the Stars" pro, said in December. "The first date we had we both had that feeling like we were going to fall in love with each other."