Hmmm . . . I didn't think honey could spoil, but I guess it can ferment.
I use honey to stop cold sores in their tracks. When you first start to feel a cold sore coming on (you know, that itchy, burning feeling?), keep the area covered with honey as much as possible. If you do, most likely it will never develop into a full-blown cold sore!
An additional plus is that your sweetie then has an excuse to call you "Honey Lips"!