Just keep going and leave him to his own devices.

As far as you're concerned, Ash is welcome to stick around if he wants, but it doesn't make much difference to you. Returning your focus to the mirror, you let the past few moments fade from your mind and immerse yourself in your pleasure once again. As you're getting back in the zone, you're aware of Ash finally shaking his head clear and turning to leave. You hear the soft clopping of his hoofsteps on the wood floor as he heads to the kitchen.

No distractions interrupt you this time, and it's only another minute or two before you feel your peak approaching. Relaxing to let it wash over you, you let out a loud neigh of ecstasy as your balls tighten against your body and you cum hard, spraying a thick jet of horse cum clear across the room to splatter against the mirror. More follow, leaving your reflection a gooey mess in a matter of seconds. Your asshole squeezes around the bulb of your plug as you cum, amplifying the pleasure wonderfully.

Too soon, you come down from the high. Catching your breath, you stand up, careful of both your shaky legs and the debris littering the floor. Turning your back to the cum-splattered mirror, you bend at the waist and use one hand to spread your plush asscheeks, admiring the sparkle of your plug standing out against your dark skin and coat. Releasing the handful of soft flesh, you lay a playful slap on it before straightening up and returning your thoughts to the present.

...Shit, your room really is a mess now. You should clean it up...but you need the broom and vacuum to get all the shards of your broken mug, and the glass cleaner for the mirror. All of which are outside your bedroom.

Ah, well, it's not like you wanted to stay in here all day anyway. And besides, the delicious smells of breakfast are already reaching you from the kitchen.