[That's actually quite true.] It's not necessarily flirting! It's simply good manners to point out the loveliness in a lady's visage. For example, you can say, "Oh, what lovely eyes you have; such a vivid shade of violet!" or "Oh, you have such a pert nose!" You don't exactly have to say that they're beautiful if they aren't. However, I know that I am beautiful, so that is not a problem for me. Ohohohohohoho~! ♥

[Ahem, moving on.]

To be called "strong" is a very acceptable compliment indeed. You should be flattered.