I thought it was weird when Kristen Schaal's character was talking about all the sexual stuff they would do to each other, and Guillermo gave that little "no thanks" shake of his head. He's always been interested in women before...maybe The Guide just isn't his type. Hey, I think Schaal is cute 😀
Edit: Since the actor identifies as queer in real life, maybe they are heading for a romance between him and Derek on the show. They did hint at a more than servant type relationship with Nandor earlier in the season.