Why did Heidi Montag decide to leave husband Spencer Pratt? The “Hills” villainess is moving in with pal Jennifer Bunney, who said the couple have “some issues” to deal with.

“She’s moving in with me,” Jennifer told Us magazine. “They’re not divorced,” but the spouses of a year are “going through some issues. I don’t think you move in with your friend if your marriage is completely cruising along. If things are great, you don’t move out and move in with your friend.”