"Splitting Adams," by Percy Spurlark Parker, in Ellery Queen's Mystery Magazine, July 2014.
Terry Adams is a very unhappy man. He's not good with women and he blames it on his big brother Jerry. Jerry is slick and smooth and always moves in on Terry when he is trying to get started with a new lady.
It has just happened again and Terry, well, Terry is about to lose it.
A clever piece of flash fiction.