There's something about physical vulnerability that can lead to emotional vulnerability. Austin and Naomi discovered that firsthand on '90210' (Tue., 8PM ET on The CW). Stuck in a hot security van, first Austin and then Naomi strip out of their clothes.

Afterward, he opens up to her about the real reason he doesn't want to see Naomi happy with Max. And it's not "because that would be one big hoot," as she guessed.

"I can't stand the thought of you with him and not me," he explained. "I'm crazy about you, Naomi."

And then they almost kissed, which of course is when the doors were opened and Max was standing right there. Now who's feeling vulnerable? Oops!