Just at the moment Rex is about to insert his cock inside me, something I've been waiting for, a knock is heard on the door. I immediately rise and hastily start to put my clothes on.

"Who's that?" Rex growls, angry that someone dares to disturb him at the most pleasurable moment. It's even affecting me more than him, seeing him get his clothes back on, leaving my burning urge unsatisfied.

"It's I, Alpha." A young masculine voice sounds from outside, I recognize it as his cousin who's living with us, he is seventeen and Austin by name.

"Austin, why the hell should you disturb me by this time?"

"I'm...