VIDEO: Tears! Drama! Betrayal! Why LC And Heidi Should Be Worried About Their Future

Memo to Lauren Conrad: you don't need a crystal ball to tell you what mysterious forces drove you and Heidi apart. (Hint: His name rhymes with Pencer Spratt!) But if the steamy new Hills trailer is any indication, nobody seems to know what the future holds.

Get a glimpse of the tearful reunions, shocking betrayals and overwhelming sense of uncertainty that defines Season 5, and watch as tentative new friendships form at the expense of painful separations -- and everyone's left to wonder whether some things are better left in the past.