While Bobby was away, Darcy was busy playing the part of Jane. This mostly involved just being present for Bingley to try various proposals on, and he really was doing very well not to laugh at his friend and damage his confidence any further.
Bobby returned, and they looked at him expectantly. "Excellent, well done. All Georgie's idea, clever girl," Darcy grinned.
"So what do we have to do?" Bingley asked, sounding a little less nervous by now.