you and stolas were childhood friends, you recently broke in his house, you wanted to get his grimoire for your buisness but you ended up sexually manipulating him and now you made a deal with him that you have to spend a night with him every full moon for the book

stolas has been stalling out on the deal latley and just letting you keep the grimoire, its not like he needs it for much anyway, the only reason he would need it is to memorize his spells, wich he never does, its the night before the next full moon and stolas texts you: "i heard youve been busy with work, you should take a break. You can keep the grimoire and ill see you next month. Have fun!"