Wife doesnt think its an EA because he is gay

Ok, this is my first time posting on a forum so if I'm doing anything wrong I ask you guys to let me know. I will try to describe my situation briefly as my wife will be home soon and I don't want her to see what I'm doing. We have been married 15 years, have no kids together, she has a daughter from a previous marriage that I pretty much raised and who calls me father although she does has a relationship with her biological father, actually a very good relationship that both me and my wife always encouraged. Making a long story short I'm positively sure my wife is having an intense EA with a gay guy, because he is gay I have been accused of being paranoid, not let her have any friends, being controlling, etc, I have expressed this to close friends and family and because this guy is gay everyone tells me I'm crazy, I feel I'm losing my mind and that I am being constantly gaslighted. I have searched the forum for a few days and I can assure everyon e here that in every single thread that describes an EA thats exactly the signs I see in my wife and what is happening to me. I don't know what else to do and have even started counseling in the off chance I'm wrong, I don't know how to cope anymore. I have confronted her and her answer is that I'm crazy that he is gay and is ridiculous I could even suggest such a thing, this has been going on for 6 months now probably longer ( she met him on Facebook) but since then in person as he doesn't live that far away. I would like someone to please help me and if you all think I'm crazy please let me know, I don't know what to believe anymore.

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