Mx Female Tension of Opposites?

[Walsingham]

A couple in their late twenties are about to celebrate their fifth anniversary. He assumes they're going to go out for a celebratory dinner. However, his girlfriend, whom he knows is a sorceress, has different ideas about making it an evening to remember. She first transforms him into a fat, balding, unattractive man in his fifties; then she transforms herself into a blonde, busty bimbo in her early twenties. What happens next? Does she humiliate him, treating him as the dirty old perv next door? Does she tease him? Does she tell him the change is permanent and, while she will still see him and take care of him, she will need to find another guy to satisfy her needs? Imagination is the only limit!