(CNN) -- John Mayer sounded awfully happy with Katy Perry in recent interviews, but it would appear the pair have broken up once again.
"Multiple sources" told Us Weekly that their relationship has come to an end, at least for the time being. One loose-lipped acquaintance told the magazine that while "it's sad," "it's not over till it's over."
Pop star Perry, 28, was first attached to the singer/songwriter last summer. The couple reportedly separated for a bit in August 2012 before getting back together that September.
By the start of 2013 they were clearly an item, showing up at President Obama's inauguration together, and then later cuddling up at the Grammys.
Along with giving Perry a ring that sparked engagement rumors, 35-year-old Mayer has been forthcoming about his romance. He told Rolling Stone in January that he's been "quite happy" in his relationship with the "Wide Awake" singer, and added to CBS' "Sunday Morning" in February that for the first time in his life, he didn't feel like he was in a celebrity relationship.
Although Perry's been pretty mum on their status, she did sound content on March 2. "My boyfriend is taking me to a kitten shelter in his truck," she tweeted at the time. "I can't think of a more perfect Saturday."
According to Us Weekly, those in the know have hinted that the couple's careers were demanding attention, with Mayer busy preparing for upcoming tour dates and Perry at work on a new album. CNN's reached out to Mayer's team about the report, but hasn't heard back. Perry's camp declined to comment.
CNN's Denise Quan contributed to this report.