Facesitting my chaste slave

My slave is required to remain chaste as part of his contract as my owned slave. He is on day 25 of an unspecified chastity sentence. Certainly not long enough to be permitted any kind of release, but long enough to receive some teasing as a quasi-reward. With just a thin layer of latex and an even thinner pair of nylon tights between us, the slave must concentrate on enjoying any scent he can get close enough to appreciate as I enjoy the sounds he makes as I nestle, gyrate and bounce upon him.