A little plot bunny, an excuse to make dumplings just to have something to go with the vinegar:
The protagonist with the receptive role has skin hunger, so they secretly and furtively keep the protagonist with the insertive role.
Then, just as the latter falls for them, the former's condition suddenly gets better.
The receptive protagonist is overjoyed, happily celebrating on their own: Thank goodness!!!!
The insertive protagonist can't believe it and has a complete meltdown online: ? You're better now?? And now that you're better, you don't want me anymore?? I can do it for free, you know?? Hello? I said I can do it for free, did you hear me? I don't want money!!!
Theme: To be decided