From Heidi and Seal to Kristen and Rob, the 10 most surprising splits of 2012.
Rob Pattinston and Kristen Stewart
She did what?! Twi-hards around the globe shrieked after photos surfaced of Kristen smooching (married!) director Rupert Sanders. But after a public apology, Rob found it in his heart to forgive her and the two are back on.