Is he a private investigator or actually into me?

A guy from the gym has been Persuing me for 6 months. He knows I’m married and I’ve told him I won’t cheat on my husband, but that my husband and I are on rough terms. I’ve never touched him but we do express our interest. He recently tried to get me to sext him. I said no. He asked questions about my marriage and I said I don’t know how much I should say and he responded “ I’m not a private investigator or anything” which obviously has me thinking he is. He gave me his linked in and it says he does surveillance for a living. If I google my city and surveillance investigation he pops right up. Would a PI hired by a husband pretend to be interested in someone to get them to cheat to report back the infidelity? Or is he really into me? I’m attractive and so is he, but I am more so , so it’s not like unlikely to have a guy into me or anything.
Is he a private investigator or actually into me?
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