Hills stars Heidi Montag and Spencer Pratt have taken the ultimate step to defend the sanctity of their made-for-MTV relationship from viewers who love to hate the cheesy couple: They eloped in Mexico. As with most of their highs and lows, the news is documented on the latest cover of Us Weekly, out this week in time for the Thanksgiving rush. The cover quotes Montag, 22: "The minute we said our vows I couldn't stop crying."