Declaration of love, or something

Well, shiver my timbers and foist my gumple! Today I received a Valentine's Day Card showing a couple dancing, and the legend "You tickle my fancy". It's an expensive card and posted first-class, so it is from someone not short of a bob or two. Indeed, a person of taste. A close inspection of the postmark shows that it was not posted locally, so it must be a very distant fancy that I am tickling. To tell you the truth, it's probably just as well: fancy-tickling at my age could be dangerous. And, wealthy and cultured as she may be, I am taking no chances: I really don't think I would cut it as a toyboy.