Just add on, you are on the right track because the scene where you jerk off in her panties could be it's own story thread.
You do it a bunch of times (with variation to keep things fresh) she finally gets mad and wants to know why you keep doing that.
Could go in a few different directions.
Let the player be *ahem*
Deviant
Jerk off in your "Landladies" protein shakes or something
Then the "Landlord" accidentally drinks it one time, for comedic effect
I dunno just tossing things out there.
Good luck on your game broski.