Wife's stepsister gifted me a happy ending birthday massage

My stepSister knows exactly what I'm like so it's hard for me to feel guilty at all. Sending her husband to me for a birthday massage. She loves to feel superior. ‘Helping me out with my new business' as she put it. She always likes to look down on me. Always has. Have I always wanted the opportunity to fuck her husband? Of course, even if only to know that I can. To know that I can have what is hers. He didn't put up too much of a fight when I sucked his cock, pissed over him, he fucked me as though she hadn't been getting it quite right all along.