A sobering experience

I must have closed my eyes long enough for them to think I was asleep because the next thing I’m aware of allot of commotion, so I yet again try to open an eye to see what’s going on.
I almost instantly felt more sober at the view as my body and mind went into overdrive.
“Shit he’s opening his eyes” Sarah muttered desperately, her face close to mine jerking back and forth the whole time.
She was bent over a bit more than before, and Lee was pounding away behind her, “you need to finish quick!” she ordered.
“If you get on the bench and open your legs so I can see your pussy I’ll cum much sooner” He grunted while not stopping his frantic onslaught.
“What next to him!?”, she shrieked, her voice interrupted with each thrust.
“It’s no different to this!” He added still desperately pounding away, the audible wetness of her pussy easily recognisable “Ok ok but you’d better be quick!”

I was quite alert now but almost felt too embarrassed for want of a better word to say or do anything. I let myself get in such a bad state, and should have realised what was happening sooner but was too wasted. Not only that but I was getting hard hearing and seeing them fuck and it confused me.
I had visions of her perfect little pussy stuffed with his cock, instead of mine like she’d promised me earlier. The sloppy wet noises helping my hindered imagination to create the obscured image in my mind, my cock was beginning to ache.