Black Bird Vol. 9 (manga)

Misao and Kyo finally go all the way, and Misao can't regret the new levels of intimacy, even though all the other demons seem to be able to tell that they are now lovers. But does Kyo feel the same way? Instead of bringing them closer, their new status seems to make him turn away from Misao. Is that just the nature of guys, be they human or demon? Or is there something darker behind Kyo's sudden lack of warmth?