Drew Barrymore and on-again, off-again boyfriend Justin Long kiss passionately on a boat in New York's Central Park.

But the couple aren't displaying a previously hidden exhibitionist streak – they're filming scenes for their forthcoming movie Going The Distance.

Drew and toy-boy Justin split in July 2008 after dating for almost a year.

They first sparked rumours they'd patched things up in March this year, when they were spotted enjoying a series of romantic dates.

Yesterday the real-life couple seemed content to spend the day locking lips in front of crew members and curious members of the public.

Getting paid to kiss your own boyfriend? Not a bad job if you can get it!

 See more Drew and Justin below