From r/AskReddit

asking about someones double life and the signs that should have given it away.

Not my partner, but my boss (married mother of two) was always taking long lunches, forgetting things, dressing particularly nicely for normal days, seeming a little tipsy after lunch. Once, a friend mentioned the neighborhood she’d moved into appeared to have a big swingers vibe, and my boss laughed out loud but went back to her work, saying nothing.

We’d make jokes she was having an affair but I don’t think anyone believed it. She was a proper southern lady, dedicated to her family, or so we thought.

After she passed away (RIP) they found a highly detailed sex log that specified huge numbers of guys and a liaison almost every day except the week she and her family took their annual vacation.

She used code for the guy, the hotel, and details like 2 O’s... :) or *boring :( * or likes oral :D