The 26-year-old singer Miley Cyrus and 31-year-old Hills: New Beginnings star Kaitlynn Carter have split, following their breakups prior from Liam Hemsworth and Brody Jenner. “It was getting serious and Miley wasn’t comfortable with that,” a source close to Miley said.

“When they first got together, it was just a fun casual thing, but it ended up becoming a lot and there were big emotions attached,” the source told E! News. “It went from 0 to 60 and she wanted to put on the brakes. It was unexpected to end things so abruptly, but it had to be done. She just got out of her marriage and Miley felt like she and Kaitlynn got carried away.”