The next several days went great. Your relationship had been in good shape before you found that lamp, but your girlfriend had been extra amorous since you made your wish. You noticed the patch of scales on her hip was slowly growing each day and they seemed to be an erogenous zone. However, as the scales spread it was inevitable your girlfriend would notice them too.
It was a Saturday morning when you awoke to the sound of the shower. Your girlfriend had woken up first. As you lay there in no particular hurry to get out of bed, you heard the water turn off. A minute later your girlfriend came out wrapped in a towel and saw you were awake. She walked over to the bed.
"Honey, what do you make of this?" she said and pulled the towel aside to reveal the dozen or so scales on her hip area.
"Dry skin?" you meeky suggested.
"No, I think it's something more than that. I wonder if I should see a doctor?"
You think for a moment. You could tell your girlfriend what was happening: that she was transforming permanently into a mermaid because of a wish you'd made with a genie. Would she believe such a wild story? You realize in your wish you said she would want to love only you, but never specified she would want to become a mermaid! But what would a doctor say?