It actually took an hour to find where this was in the code, but doing it was pretty simple. The issue arose in that it's a variable with 2 names, Affection/Love and love is used so often in the code that even using a search pulled up hundreds of results.
Anyway here you go, affection is always revealed. The original function checked if she is already assigned as a lover and ISN'T dorothy OR you've gone quite far in the relationship. I had no idea what you actually wanted so I just disabled the entire function so the males and even the slimes will show how much they love you.
Edit = Also this will not require a new save.