She goes for a bit of a swim, and then says:
"Do you think you could put some more suntan lotion on me? I'm worried about getting burned..."
You give in to her soft approach and start putting the suntan lotion on her. She squirms in a sexy way as you massage it in all over her luscious body. You know that she must know how much this is turning you on, since you previously had told her how sexy you thought putting suntan lotion on her was (before the break-up).