If your girlfriend was Victoria's Secret hyper-hottie Alessandra Ambrosio, how would you react if some dude came up and wanted his picture with your girl?
Probably a lot like this guy -- her current paramour, whose name we didn't catch -- who tried to pry Ale away from an eager fan as they slid out of Butter and into a waiting cab.
Still, her fella was magnanimous enough to let the fan have a little piece of Ambrosio ... at least photographically...

Party queen Lindsay Lohan rocked this sequined Gucci mini dress at her ‘Just My Luck’ premiere in May of 2006 while Victoria's Secret hottie Alessandra Ambrosio brought sexyback in her version of the Gucci frock while she celebrated her 26th birthday in Miami this past weekend.

Source: http://www.tmz.com