You come to a workout class with a new personal trainer. She starts with stretching and you enjoy it when she teaches you how to stretch your arms properly revealing her armpits. You have a friendly chat while you work out but things get steamy and sweaty and you begin to lose focus. She's deep into a leg work out with her arms up as she spots you cock popping out of your shorts. She's shocked as she wants to keep it professional but she feels the same way. You fuck her on the floor to make her let all the panting out. She breaths heavily from the most demanding workout she's ever done. One creampie is not enough to call it a day so you shoot another load making her hate that fact that she fell for it and loved it.