I doubt Romney is losing any sleep over it.
Via Beltway Confidential:
President Obama told a starstruck Jimmy Fallon today that he and Mitt Romney are “not friends,” although the president had warm words for Ann Romney, who has emerged in the campaign as a key to Romney’s outreach to voting women.
“I’ve met him, but we’re not friends,” Obama told Fallon. “His wife is lovely,” he added.
Obama implicitly targeted Romney during his speech at UNC, as he emphasized that he and First Lady Michelle Obama “didn’t come from wealthy families.” Last week, Obama similarly brought Romney’s wealth into the spotlight.