Guy's Behavior

Why would a guy start building a house with his wife he doesn’t love anymore?

I know it’s none of my business but i just don’t understand this: A male married coworker of mine, 2 kids, has been married for about 12 years and has been having an affair with his married coworker, also 2 kids, for about 10 years. (They always sneak off together when other coworkers are distracted/in meetings, when she is working remote he spends hours in the toilet or leaves early, when he arrives at work he sneaks off to chat with her (or do something else), when they talk they ignore everyone else around them, they always try to find excuses to be alone, and they also speak in sexy or in baby voice during teams meetings and always when the office is empty.)

I know they’ve been talking about me and I’ve also seen her giving me dirty looks from afar after smiling at the girl next to me. The guy also doesn’t like me and always makes a wide berth around me as if he was offended by something.

He currently lives in the same neighborhood as his affair but last year he started building a house that is one hour away from her. Why would he commit himself to his wife he doesn’t care about if he is head over heels for his affair at work? Can someone explain to me how men like him work? I don’t get it. And also why do they dislike me so much? I hardly interact with any of them

Why would a guy start building a house with his wife he doesn’t love anymore?
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