Jennifer Aniston and John Mayer Do Europe

Jennifer Aniston and boyfriend John Mayer are clearly mixing business with pleasure overseas this week.

The former Friends star, 39, hooked up with Mayer, 30, in Amsterdam on Monday, the L.A. Times reports.

Aniston checked into the Grand Hotel in Amsterdam and Mayer was booked at the Amstel, but was spotted leaving her place Tuesday morning, the paper reports.

The “Your Body is a Wonderland” singer gave a concert outside Amsterdam on Sunday, while Aniston – along with Marley & Me co-star Owen Wilson – plugged her new movie Tuesday during the city’s 2008 Cinema Expo.

Mayer then moved on to London, while Aniston stayed in Amsterdam, where she was snapped by photogs waving to fans after taking a boat tour of the city’s canals.