It looks like Bachelor Bob is going to have the last laugh. Bob Guiney — the portly jester whom Trista Rehn rejected on ABC's The Bachelorette — has been chosen the next star of The Bachelor. Since getting the boot from Ms. Rehn last year, Guiney became a celeb in his own right, appearing on Oprah five times, signing a book deal and shedding 40 pounds in the process. And proof that he's not holding a grudge against his ex-crush, the 32-year-old mortgage broker has reportedly agreed to sing at Trista's wedding to Ryan Sutter — an event ABC will air next fall as part of a four-hour special. And if all goes according to plan, the network hopes to broadcast the couple's divorce hearing at the onset of November sweeps.