How did I end up in your bed?

Well after we infiltrated zombie encampment and fended off their hoards the leader of their elite red squad attacked us. It was a long and drawn out battle, after all our opponent was a zombie, but we managed to defeat them. From there we were able to steal the cure and make it back, and you pretty much just passed out from exhaustion I'd gather. So I just lent you my bed...and that's how you ended up there.