That can be a bad situation. I am a trainer too. I have seen it get ugly. I had a husband who thought I was with his wife. I wasn't. The bad thing is that I really looked up to the husband and loved talking to him. She wouldn't leave me alone, very persisent. He saw that she had text messaged me over 100 times on a bill and he flipped. I was so pissed at her because things weren't the same between him and I. He got in my face at work, not pretty, he later apologized and said he knew I wasn't that kind of kid. The point is that it can get very complicated. Even if they are single, it will get out eventually that you have hooked up with them. Then your reputation is in question, then you could lose your job.