Heidi Montag has scored yet another cover of Us Weekly [1], this time dishing on what's been happening with her and Spencer. She implies that Spencer cheated on her, and he says that the relationship has been a rollercoaster ride. They seemed to be going strong as recently as last Friday [2], so who knows how serious any of it actually was. Of course we'll have to wait for the new season of The Hills [3] to get all the dirt, but tell us — are you surprised that Spencer betrayed Heidi?