"Why does God care about who I sleep with?"
Considering the condition of the world nowadays - with its loosey-goosy morals and lack of a true, stable, meaningful foundation - I think a lot of people might find some encouragement in this sermon from Willow Creek. For being such a sensitive topic, this pastor did a great job addressing it (though I agree with him that he could've spoken a lot longer and covered a lot more about it):