confessions of a hidden lover

i met this hot lawyer at the gym last month, we hit it off real quick. she said her name was jenna and she liked to push me around during our sessions, telling me what to do. soon enough i found myself wanting more than just workout tips. one day we exchanged numbers and it all went from there. i started sneaking out to meet her at a hotel, the thrill of it all drove us wild. last week we had this insane session where she tied me up and teased me with her fingers and mouth until i was begging for release. its been going on for over a month now and im torn between my wife and jenna. any advice? am i just being unreasonable or is it normal to want more than one person in your life?