"Nope," Wilkes replied, promptly and cheerfully. Why else would he go after girls? Their personality? The joy of their company?
Well...
"There are some that I don't sleep with," he said. "Like Rosie. I like Rosie, and I don't sleep with her." That doesn't mean he wouldn't like to, though. And other than his sister, he couldn't think of any other girls that he hung around that he didn't sleep with.