How I lost my fiancé and my job [MF]

I am a personal trainer. Until recently I worked at a local gym. I was also engaged to my girlfriend of 4 years. That all changed a few weeks ago.

The gym owner’s daughter started working at the gym as a receptionist. She is 21. She took a sabbatical from college after the fall semester (AKA she was flunking out). She was working while she sorted out what was next for her life.

She’s Puerto Rican with long wavy black hair. She 5’8” with decent tits. Her ass looks stunning in tight little athletic shorts and yoga pants. She is a big flirty. In the 5 months she’s worked her, I strongly suspect/know she’s fucked at least 3 different guys from the gym (two clients one of whom is married and another employee in his early 20s who she is “kind of dating”).

About a two month ago, we moved from friendly to flirtatious. She started joking about joining me in the showers after I worked out and having me give her a DEEP tissue massage (her emphasis).