Dungeon Master by Alex Silver

Slinging coffee is never boring. When a new customer catches my eye, I do what comes natural and flirt with him. To my delight, Martin flirts back. He soon becomes the perfect distraction from my gaming group pressuring me into DMing our next D&D campaign.
Then I overhear Martin designing his dream dungeon, and I just know he’s everything I’m looking for in a man. What could be better than a hot summer fling with my very own personal DM? There’s just one problem, I should maybe have checked which type of Dungeon Master Martin meant when I asked him to take me on an adventure.