On tonight's episode of The Hills, Spencer Pratt goes on a double date... without fiancee Heidi Montag!

The awful singer's reaction to this development? Watch it in the clip below.

[video url="/videos/clip-from-the-hills/" title="Clip from The Hills"] [/video]

"Are you kidding me?" Montag says after spotting Pratt with the bartender he was caught flirting with last week. "I had to find out that you were here sneaking around with Stacie. Are you guys dating? Are you having more shots?"

Following this totally unscripted altercation, Heidi demands that she and Pratt go to couple's therapy.

Also during the episode: Lauren Conrad puts her reputation on the line when she gets Stephanie an internship at People's Revolution.

As always, come back to our site tomorrow for a detailed recap of all the action!

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.