Sandler, Bieber movies top box office

Adam Sandler and Jennifer Aniston are America's box-office sweethearts, but Justin Bieber is the valentine for teens.

The Valentine's Day weekend was a close one as Sandler and Aniston's romantic comedy, "Just Go With It," debuted with $31 million, according to The Associated Press.

That was just ahead of the concert documentary "Justin Bieber: Never Say Never," which opened a close second with $30.3 million.

Sony's "Just Go With It" and Paramount's "Never Say Never" were close enough that the rankings could change when studios release final numbers Monday.