X17 REWIND: Jen & John's Hot N Cold Romance!

If there's any way to describe the on-and-off relationship between Jennifer Aniston and John Mayer this year, it's the "Hot N Cold" song by Katy Perry!

Their spring fling started off as just that... a fling! We first spotted the couple in Miami in May (the Friends alum was shooting Marley & Me with Owen Wilson) getting cozy together by a hotel pool. PDA? That's SO not Jen's style!



Things got steamier throughout the summer until finally burning out in August - the couple broke up and that was that. Or was it? Jen and John rekindled their romance in October and from then on we've only really spotted them together at, you guessed it, the Sunset Tower Hotel!



Not much for changing their routine, huh? And while we did recently catch Johnifer arm-in-arm at Jen's movie premiere earlier this month and out and about in NYC the other week, the couple remains pretty private.

Will this relationship last? Is Jen destined to have John's baby... or anyone's baby for that matter? Guess only time will tell!