So not only did Pika-la-Cynique interrupt their kiss as predicted, she also faded to black and had it take place off-screen!! To quoth Jareth himself: "Off-screen and with you unconscious? Bloody waste of 22 years unresolved sexual tension, and some  pages of build-up, love." -- Source
She did, however, grace us with a disarmingly alluring submissive-Jareth-lounging-on-the-couch for which there simply had to be a follow-up picture.