That's why the sex of the three will be interesting and dirty, because they have to experiment with it. Quinn likes to use her strap-on, for example. I wonder who's birthday is next, Josy or Maya? Will Josy be the one to give herself to MC anally first or Maya? Will that lead to double penetration? How about a strap-on with another dildo in it?
I'm also strongly assuming that neutral chick Zoey will join in at some point, as Josy and Maya have wondered that MC knows how to handle a woman. Then when Zoey shows up, who was his first and until Josy and Maya his only sex partner, the two will be curious about Zoey, which could end in a movie night together.