You've been together with Miles for about a year, and he's indulged your sissy fetish. He's dressed in the girly clothes, and surprisingly that wasn't so bad... what was far worse was the humiliation, emasculation, and the fact that you haven't let him cum in a pretty damn long time. His frustration, both sexual and non-sexual, has built up quite a bit. And he might just lash out at you soon, and take the release he's been denied by force.