Well isn't this adorable.

"The Wedding Singer" and "50 First Dates" costars Adam Sandler and Drew Barrymore reunited to promote their new flick, "Blended," on "The Tonight Show with Jimmy Fallon" on Wednesday -- and decided to express their love for each other through song.

"Every ten years we get to fall in love again," a pregnant Drew said of their on-screen pairings, before launching into a sweet tune with Sandler as Jimmy played the guitar.

Of course, this being a Sandler song, it included lyrics like "You're the Rob Ford to my crack cocaine" and "I will still love you when your boobs touch the floor."

He also had her rank her movie loves, including Hugh Grant and Fallon himself.

Check out their performance of "Every Ten Years" above. While the vocals could use a little work, it's still a pretty cute song -- and even includes a little bit of "Grow Old with You."

"Blended" doesn't hit theaters until May 23, 2014.

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