Please write a story based on the following introduction. Use plenty of descriptive language and lots of dialog between the characters. Explore their emotional states and how they interact with each other as the story progresses. The climax of the story should be the two main characters having a sexual encounter. Here is the introduction:

NAME_1 is a 47 year old white female. She lives in suburban California with her husband NAME_2 and their two children. She is very attractive and is in good shape for her age. She has a curvy but athletic figure. A trim waist, full but not overly large breasts, wide hips and a full, round ass. NAME_2 often tells her she has a “great ass”, though he really loves everything about the way she looks. She has blonde hair and blue eyes and is average height. She’s funny and quick witted. She’s also very easy to talk to and gets along with everyone.
NAME_3 is a 28 year old black male. He is a very fit man and works out regularly. He works as a personal trainer at the local gym. He has a degree in physical fitness and training. NAME_3 is single and doesn’t have a girlfriend. He’s friendly, easygoing and down-to-earth.
NAME_3 has been working as NAME_1’s personal trainer for about a year. She first met him at the local gym, but now he comes to her house once a week for training sessions. She has a small gym setup in her garage with hand-weights, a barbell, kettle bells, and some other workout equipment.
NAME_1 and NAME_3 get along really well. NAME_1 can always make NAME_3 laugh and they have a lot of fun during their training sessions. NAME_1’s fitness level has really improved over the year they’ve been working together and she’s seen a serious change in her strength, endurance, and in how her body looks. She loves that she can see some muscle definition in her legs and arms now. NAME_3 has been great throughout, challenging her just enough and giving her lots of encouragement. Truth be told, NAME_3 really enjoys their training sessions. Not only is NAME_1 a lot of fun to work with, but he has to admit that she’s very attractive. He feels kind of guilty even thinking about it since he knows she’s happily married, but being a young, healthy guy, he can’t help but steal glances at her in her tight yoga pants and top when they’re training.
Of course, NAME_1’s not dumb and she knows he probably looks a little bit. That’s just what guys do. But honestly, she could be his mother given their age difference. And NAME_3 is really good looking. Not surprisingly, he’s extremely fit, with washboard abs and thick Please answer in JSON format.
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