I've already been whipping Autumn's asshole for a while, but now I start fucking it too. We're well-attuned enough that I can time stopping said fucking *just* before she reaches orgasm, repeatedly. Eventually I make her hold it open so I can have better access with a rubber strap, plus ask nicely for me to hit her with it. As a reward, I fuck her hard all the way in and out without the stopping, and she comes watching herself in the mirror. (This is a great angle for catching her clit with the strap, too.)
