A source confirms to Usmagazine.com that the American Idol runner-up, 27, and the interior designer, 24, have ended their relationship.
"They're still friends, and it's totally mutual," the source tells Us. "They will still talk and see each other."
And there's very little drama behind the split, the pal says. It's all about timing -- and Lambert's on-the-launchpad career.
"Adam is crazy busy right now getting the album done and squeezing in rehearsals," the source tells Us, referring to Lambert's debut album, For Your Entertainment, out Nov. 23. "They both felt this moment is too important for Adam to focus on anything else but getting this album out and having it be a huge hit."
Source: Us!