Is this the reason Miley & Justin split ?

Could this be the reason behind Jiley / Mustin's breakup ?

Whilst filming the Send it On music video, Miley playfully gives her ex-Prince Charming a great big loving hug at Pepperdine University on Saturday (June 6) in Malibu, Calif.

Some twitter updates:

"Great day. We love our friends. -JB”

And Miley couldn’t agree more: “Ended up having a wonderful day. :)”