Confused

Technically I'm happily married for the last 8 years and have regularly satisfied sex with my wife. We have 2 kids, a nice house, the dog and the cat….
About 1 year ago I went to a convention in another city. Normally I flirt a bit with women but nothing more. But for some reason this year my eyes were glued to guys. I swear to God I cannot explain why that was happening. I was never interested in dudes more than common appreciation of a good look. The second day of my trip, I was having a drink with colleagues in the evening in the hotel bar and was mesmerized by a handsome guy sitting in the opposite side of the bar. I couldn't take my eyes of him. I was so turned on, watching him sipping his drink, how his neck muscles moved when he was talking and laughing to others.
I was so flushed and confused, that I paid for my drink and was out of the bar to my room.
I got in the elevator and before the doors closed, the muscular dark haired guy I drooled on got in. He hit the button for his floor, looked me in the eyes for an intense moment. I licked my lips and when the doors for my floor opened, he just followed me. My heart was racing. I opened my door and the moment we went inside, he grabbed me and began kissing me. So hot kissing a guy and feeling his stubble on my lips.I got so fucking horny, I couldn't get enough of him. He tasted like sin. We kept kissing and he was pinching my nibbles and rubbing my cock over my jeans which was rock hard. He pushed my head down, I got on my knees, opened his zipper and took his big cock in my mouth. I nearly came at this very moment. His smell was intoxicating. I gave my first bj ever slurping and gagging and was going crazy from need when he grabbed me, shoved me to the bed, took off my jeans, t shirt and briefs, turned me over on my knees and started licking my ass, sticking his talented tongue in my hole over and over again. I was fucking leaking. I was on fire. Then he spit in my hole and he pushed his big cock inside my hole. I got fucked. Real hard and good.He smashed his cock in my virgin ass and pummeled hitting my walls until I came in loads, crazy moaning and squeezing. He turned me on my back, and fucked me missionary. His pace went frenzy and he came deep in my ass. He kissed me long and wet, lowered his head and licked my dripping with cum ass clean and then swallowed my cock, until I cum again in his mouth. We kissed, caressed us and made out for a long time after that, until we fucked again.
Needless to say the remaining time we fucked so much, my ass was sore and I couldn't sit well during the meetings. I also fucked him in the ass and it was different from anal with women. I never felt that satisfied or so much pleasure before.
This guy was also married with kids , so we decided this should be a one time thing.
Since I came back home , I tried to pick up where I left of. I have sex with my wife and can only cum when I imagine fucking this guy. I also need stimulation in my ass but how tf can I tell something like this suddenly to my wife?
The desire, longing I'm feeling for this guy is so big that i started random hookups imagining its him who fucks me and its his cock I'm sucking.
I'm horny all the time for him.
I bought a big dildo and shove it in my ass when I masturbate thinking of him. I do this more than once per day. In the office, in my car. Everywhere I can think of. I almost black out when I cum. Because of him.
I don't want to end my marriage because I really love my wife but I'm crazy in love with this guy. Never felt this way before in my life. Turns out he feels the same because he texted me.I'm feeling like a teenager when I get a message from him.
I know its wrong but we planned a fake business trip in 2 weeks and I can't fucking breath from anticipation. Would appreciate opinions on what to do.