Ashley Tisdale has broken up with music video director Scott Speer, her boyfriend of two years, a source close to the U.S actress told UsMagazine.com.

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"They had been on and off for a while. They tried to work it out but realized their relationship ran its course," the unnamed insider said.

No more specific reason was given for the split.

Speer directed Tisdale's music videos "He Said She Said," "Not Like That," "Suddenly," "It's Alright, It's OK" and "Crank It Up," UsMagazine.com said.

The actress is best known for her work in the "High School Musical" movie and television franchise.