Mistletoe and New Years kisses

AU, M/M kissing, slash, implied non-con relationship. Ginny finds a spell and casts it on Harry. But why is Snape interfering? Why is McGonagall trying to kiss Ron? What's with Gwenog Jones' love life? And where's Dumbledore? Find out now in this one-shot. used to be in HP/GW section, but a guest reviewer couldn't understand the slash warning, so I've moved it to this section