How did you catch your spouse cheating without even suspecting anything?

Dating this girl a few years back and I became really good friends with her brother just because he appreciated my help during a difficult time for their family.

Their father had abruptly passed away.

Two years into the relationship, the brother contacts me and asks to meet up for coffee and a serious conversation.

Apparently he caught his own sister with another guy,

a mutual friend of ours, and this crap had been going on for like a year. As soon as he found out,

I was told. I broke up with her. I'm still friends with the brother. Go figure. I came back from a

trip four hours early. My wife was supposed to be at work still. I opened the front door

to see her sitting completely undressed from the waist up on the couch making out with a co-worker.

He ran out the door and she ran into the bathroom and locked the door. I sat on that couch for about

an hour because I couldn't think what else to do. Finally, I just stood up and left so she could come

out of the bathroom and put a

shirt on. I'd been on the road for work. It was supposed to be 10 days. I got home a day early. I had a

friend pick me up at the airport to surprise my wife and two kids, two years and eight months old

respectively. Walked into my ex and her coffee friend snuggling on the couch with my kids in the same room.

I was livid, and of course she denied everything. We split up weeks later.

Two weeks ago, I sent a message to a mutual friend asking to borrow a router.

He didn't answer, but no worries, he lives nearby. I'll just stop by and grab it.

I pull up to his house and start heading down the driveway. He has a long country driveway,

so it's a few seconds before I see my car already there. I was in my company vehicle, by the way.

My heart began to sink, but they're friends and business partners, so maybe it's nothing.

I got out of my van and looked

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