Even empresses are subject to strain. Even the most educated can sometimes react thoughtlessly when confronted by the unfamiliar. Even the most skilful hunter can't outrun a broken leg. Dragons don't toss and turn in their sleep. They're not built that way.
Eroticism has little to do with nudity.
Life often places us in the most unexpected situations. It is the nature of wizards and dragons to get along with one another. Life's incidents are dictated by fate and not neat plannin'. Love is a lasting thing, while lust is but transitory. Magic's pretty much the same no matter what world or dimension you exist in.