Olivier Sarkozy, Mary-Kate Olsen

James Devaney/WireImage

Mary-Kate Olsen and Olivier Sarkozy's PDA love train rolls on.

The couple was snapped sharing a kiss (yet again) during a New York Knicks and Boston Celtics playoff game last night at Madison Square Garden.

The 26-year-old actress was dressed casually in a dark top and scarf and was all smiles while smooching her 43-year-old French beau. Meanwhile, Sarkozy sported a sweater and navy jacket for the sporting event.

Other stars who were in attendance during the basketball game included Ben Stiller, Jake Gyllenhaal and Sean "Diddy" Combs.

The lovebirds are anything but shy when it comes to PDA.

They were last spotted cuddling courtside at a Knicks game earlier last month.

PHOTOS: See Olsen & Sarkozy's romantic history

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