Split: George Clooney, 52, and Stacy Keibler, 33, a “source close to the couple” tells People — and we are inclined to believe the generally-cautious celebrity chronicler that they’re indeed over, because two years is the standard lifespan of a Clooney romantic relationship, and, whoa, look at the time! She’s the Baltimore native and fitness model who first made it big as a WWE vixen and “Dancing With the Stars” veteran; he is, well, George Clooney. Dating since the summer of 2011, he first debuted her at industry events that September. Their relationship made her a sought-after player in the celebrity paid-appearance biz; in April, she lent her starpower to opening of live table games at the Maryland Live! casino in Hanover. Keibler was preceded in Clooney’s life by Italian actress Elisabetta Canalis (2009-2011), cocktail waitress Sarah Larson (2007-2008), some blurry on-off years involving British model Lisa Snowdon and TV actress Krista Allen (2000-2006), and French student/waitress Celine Balitran (1996-1999). People reports that Clooney and Keibler “will remain on good terms,” as if there were a contract involved or something.