"I thought we were in a relationship!" exclaimed Lilia.
"I thought you were giving me the cold shoulder last night!" countered Kevin.
"What do you mean?"
"How many dates have we been on and you haven't invited me in until now? You've never even said you wanted this to be a serious exclusive relationship."
"I had to take my serum last night before I turned back into a mermaid! I couldn't let you know."
"So you don't trust me?"
"I couldn't risk it! I had to be sure you weren't going to drag me off to a laboratory or be scared off!"
"You're my girlfriend, not a lab rat. I wouldn't have been scared off. I would have sex with you whether you had legs or a tail!"
Upon hearing those words, Lilia grabbed Kevin and pressed her lips to his. Kevin was surprised, but quickly reciprocated. His tailfin began instinctively flopping with delight.
"I'm so happy to hear that!" exclaimed Lilia. "I would like that very much too!"
Lilia climbed onto Kevin, straddling him and kissing passionately again. Kevin wished he was a man again right now, instead of a mermaid.
"How about we figure out how to get me back to normal then we can see what it's like?"