New young couple with fantasies in bed

Wanna be cuck and wife that needs some help with progressing our fantasy
We started with role play and talking about our common fantasies during college. We would identify guys she would fuck (fantasy) while out in public. We’d talk through the event. Turned us both on. Fast forward when newlyweds starting our careers and we met a high school senior who hung out at our apartment building pool. He made her motor rev. Didn’t take long before they were having sex - with my permission.