It started with me noticing little things. I noticed that she started keeping her phone face down on tables, etc. I cannot read her messages while the phone is locked, but I suspected she didn't want me seeing who the messages were from.
Leaving a room to "get coffee" or similar and being gone for an extended period of time. I guessed that she was talking on the phone with someone (later found to be correct).
I noticed on several occasions when she would be out somewhat later than usual, I would track her phone and she would be somewhere that one wouldn't normally remain for long periods of time, such as the drug store a few blocks away. Again, I presumed she was having conversations there. She would subsequently come home with no bags from the store.
Having suspicious phone conversations with her mother. She REALLY needs to figure out that being in the next room and talking in a low voice does NOT prevent me from hearing her. My hearing is excellent. She tries to use fairly neutral phrases when talking but occasionally something diagnostic slips through. I heard her saying things like, "What do you think about the other one (man)? What do you think about the wife?" (I'm guessing the guy--or one of the guys if there's more than one-- that she is dealing with is married or separated). "It's hard to do this when I have this thing (presumably meaning the D) to take care of, and I don't want to mess it up."
After all this, I pulled the cell phone bill from the last month and reviewed it. For almost a month, there have been calls in the morning and evening (and occasionally in the afternoon) every single day, from a number I don't recognize, and they are usually the longest calls of the day, ranging from 20 to 80 minutes. (She never calls him; perhaps she thinks that will prevent the calls from showing up on the bill?) Tried a reverse lookup on the number, and it appears to be assigned to a male in his late forties.
Seems like game, set, and match to me.
Me 59 W 47 T 26 M 23 S18, S14 BD May 2023 D filed June 2023 OM1 confirmed: December 2023 OM2 confirmed: October 2023