He should have been disgusted by what was happening. Most likely. Most assuredly. But these days, the last things he could trust were his emotions, sensations, and especially, his turn-ons. Witnessing the way it hurt her to be assfucked by someone other than him slowly turned from painful to acceptable to downright exhilarating. His breath became laboured and he started plunging into her with genuine arousal. The more disgusted she looked, the more it turned him on. Maybe there was a chance she was still his at the end of the day.