Awww, Adam Sandler and Drew Barrymore reunited on 'The Tonight Show Starring Jimmy Fallon' last night (Feb. 26.) 

"Every ten years we get to fall in love again," Drew said of the duo's repeated pairing in romantic comedies like 'The Wedding Singer' and '50 First Dates.'

Jimmy -- who also starred opposite the actress in 'Fever Pitch' -- asked if she and Adam would like to express their feelings for each other in a song. The result? A sweet, hilarious duet (complemented by the comedian's guitar.)

Highlights of the song include Adam recalling what happened the first time he met Drew and asking her to choose between him and Jimmy. So sweet!

Watch the duet is all of its adorableness in the video above.