Watching My Stepdaughter Do Yoga

My stepdaughter Ariel has grown into a lovely young woman but I can't help noticing her attractive body especially during her morning yoga routine. One day she catches me spying on her but instead of getting angry, she reciprocates the attraction and we fuck quickly before her mom gets home. I know it's wrong to be with a stepdaughter this way, but her fit young body felt so good wrapped around my cock.