With the confirmation of his vague suspicion, Kirley felt his stomach twist unpleasantly. He wasn't entirely sure that Leigh would be so pleased with the fact that he'd snogged her cousin...and he really didn't want her to be upset with him.
On the other hand Kirley really, genuinely liked Shannon...and he wasn't the kind of person that was going to let an obstacle like this dissuade him. He decided rather quickly that he'd think about how he was going to deal with telling Leigh at another time. For now, he just wanted to stay with Shannon, no matter who her relations were, "Huh," he said softly, as if it didn't really matter. He supposed that he really should have sorted that one out for himself before then. He noticed that the smile was falling from her lips, and he really didn't approve of that, "You know, I refuse to kiss you again until that smile is back," he gave a bit of a grin of his own, hoping that she would realize that he didn't want this to end just yet. Whatever problem Leigh might potentially pose could be sorted out at some other time.