Even if you watched the season-four premiere of The Hills last night, there's a lot you didn't see.
Let's start with Lauren's date with Doug Reinhardt. Not only did she also date him before in high school, but Heidi said L.C. liked him back when the frenemies were still roommates.
"He was her obsession," Heidi dished, while Spencer added it was "cold" that his sister, Stephanie, went out with Doug.
As for Heidi's sister, Holly, who appears this season...