The Twilight star was perched in the front row for the Heart Truth's Red Dress Collection fashion show at Bryant Park in New York City, waiting anxiously for his wife was to strut her stuff in a Badgley Mischka creation.
But as the 90210 queen bee stepped onto the red runway, she didn't spot her hubby right away.
"Honey, I couldn't find you when I went at first," she admitted to him backstage afterward. "I couldn't find you."
"Yeah, I didn't want to throw you off your game," he said of his subtle whistling throughout her catwalk climb. "I tried not to. Were you nervous? I was totally nervous."
Scared or not, Facinelli couldn't hide his appreciation of his wife's assets. "I look like a street urchin next to my hot wife," he told a quick-click photographer.
When E! News asked him before the show started if he'd ever seen his wife do a runway show, he responded, "Only in the living room."
Dare we ask what she was wearing for such an occasion?
"I can't say," he laughed.
And, ladies, in case you were wondering, the erstwhile Carlisle Cullen couldn't give us Robert Pattinson's phone number either.