Jennifer Aniston may be done shooting in the faux snow, but she was still all bundled up on the set of Marley and Me today. Her man John Mayer was nowhere to be seen, but judging from their chemistry he can't have been far from her thoughts. According to friends, Aniston has been gushing and giddy about her new boyfriend, and not just his big personality . . . if you know what I mean, wink. She's not the only one enamored by the Mayer — some of his fellow musicians like Alicia Keys and Josh Groban have nothing but love for him. It's still pretty new between him and Jen, but it's no secret we already have nothing but love for both members of this hot couple.