Zeus was watching Europa carefully, taking in the movements of her body and her reactions. He'd never been overly fond of humans, but some of them were truly beautiful and that was worthy of his attention. Europa was one of them, meant to be more than just another forgotten human because of that face.
Her question drew Zeus from his own thoughts and he furrowed his brow just a little as he said, "you'll have to remind me: which are you sons?"