Ashley Tisdale & Boyfriend Scott Speer Split

The High School Musical star and her music video director boyfriend of two years, call it quits. THOUGHT YOU'D SEEN ENOUGH CELEB SPLITS THIS YEAR? NOPE, THERE'S ONE MORE COUPLE CALLING IT QUITS -- AND NOW ASHLEY TISDALE IS BACK ON THE MARKET! THE HIGH SCHOOL MUSICAL STAR AND HER BOYFRIEND, MUSIC VIDEO DIRECTOR, SCOTT SPEER ARE OVER... A SOURCE TELLS US WEEKLY, THE COUPLE WHO STARTED DATING IN 2009, "had been on and off for a while. They tried to work it out but realized their relationship ran its course." BUT TIZ HAS BEEN DROPPING SOME CRYPTIC HINTS ON TWITTER, WHICH LEADS US TO BELIEVE, THERE MIGHT BE MORE TO THE STORY... A FEW DAYS AGO SHE TWEETED, "What goes around comes back around," AND LATER SHE POSTED THIS PIC OF HER AND HER FRIENDS, QUOTE, "Rocking out to 'Don't hold your breath' by Nicole Sherzinger." HEY, IT DOESN'T TAKE A ROCKET SCIENTIST TO READ INTO NICOLE'S LYRICS..."You can't touch me now there's no feeling left/ If you think I'm coming back don't hold your breath/ What you did to me boy I can't forget/ If you think I'm coming back don't hold your breath..." 'NUFF SAID...