Once upon a time, Heat owner Micky Arison and LeBron James were thick as thieves. After all, James (and some other guys) won Arison two NBA titles. But now that James has returned "home" to Cleveland, Arison wants him to know what a big mistake he made.

A bit petty perhaps, but nothing like the meltdown the last time LeBron James switched teams. I especially like the "see, you could still be getting happy birthday messages from me" tweet.

Photo via Mike Ehrmann/Getty