I'll try to lay this out as clean as possible.
Married 1 1/2 years, together almost 5.
No notable issues prior to marriage.
Im early 30's, she's late 20's, he's mid 30's
I've been cheated on by 2 others girls, including a previous fiancee.
Wife is a Paramedic. Suspected other is her boss/paramedic.
Other guy is married with 3 young children.
So my wife and I every year do fun runs, so we typically train for them together. Going on runs outside together.
Late 2016, early 2017 - she started her placement through school, and worked with the guy. Everything seemed on the up. The guy is a super nice guy in general. She invited him to participate in the fun run we do. Not a big deal to me.
Then he started joining us for our training runs, and that where everything starts.
The are closer in height, so they easily matched stride and would chat about their profession. When the run was over we'd all stand in the parking lot and chat, they would dominate it with work.
I was fine with this as I chalked it up as her excitement to be finally working in her field, and his passion for the job.
Over the course of a few runs, I became the odd person out. I stopped going and told my wife why. I wasn't mad, I just basically said I didn't like the feeling so I'd rather not put myself in the situation.
The continued the runs, and started going 2-3 times a week. No big deal yet. The nights would usually go 530-1030ish.
Slowly, instead of chatting in the parking lot, they started going for ice cream, or a snack somewhere close after. Not a fan, and mentioned I wasn't a fan of it to her. She shook it off and stressed just friends and how helpful it's been to chat about work.
Last summer around this time she was hired to work for the service.
They continued their runs through out the summer, and when cold weather hit, they became unable to run, so they'd meet for 'snacks' and drinks. - wasn't a fan, told her so. Was given the same answer.
Then the nights started becoming later, with more stops. We had a couple minor talks about it. Said she would try and blamed it on losing track of time and her bosses ability to talk and talk (he does have a tendency to talk for a lengthy periods.)
So this past January, i finally break and when the opportunity arises I check her phone. I check her texting/picture history with him and there is nothing suspicious there. The texts aren't anything to bad, some light flirting, but there was an exchange where he was drunk out of town, and she told him to 'behave'. It was a very uncomfortable exchange I feel.
A couple nights later she wasn't home by 2am, so i texted both of them. No answer. I call at 235 no answer. Lots of snow that night so i panicked and jumped in my car. 245 i get a casual call from her. I blow up. Ask where she is, why so late etc.
She says they lost track of time and we're downtown. (she hates driving downtown.)
When she gets home, I unload all my thoughts/feelings on her. She says he was stressed about work and got drunk and she was being a good friend, and ended up driving him home cause he was too drunk.
NOTE: I never told her about checking her phone, I said I wanted to, but I hadn't.
End result, she won't be out with him past 12, but 11pm was the ideal time. She abided by this.
They kept doing their 'hangouts', walks/runs as weather improved.
I didn't like how I felt still, and when i went to check her phone she had changed the password. Fortunately she didn't wipe her old phone, so I started to track her with the FIND MY PHONE app.
Never was at anywhere sketchy, but it led to some confrontations.
She'd run an errand, he would happen to be in the area, when I questioned her.
If I was vague, and just asked her where she went, or where they went on their 'run', she would always omit a stop - a different walking trail, a restaurant, and in one case a parking lot in the county they work out of.
All this led to another major blow-up. I told my preference would be they dont hang out, but because I have nothing concrete, I wanted to be flexable and told her once/twice a week, home 10pm at the latest and just runs, no more drinks and snacks.
This is the hill i told her our marriage lives and dies on.
A couple weeks go by stress free, however I've been checking her internet history.
This past Tuesday my gut instinct goes bad again, like it was during all the stuff above. Not 100% why.
She ended up working 4 shifts, with 3 of them having her work late or meeting with coworkers after (entirely possible.)
In her search history, I see her looking up hiking trails, and fun things to do in the area. She also spent sometime on pinterest looking at sexting examples. We don't sext, she's never been a big proponent of dirty talk/sexting.
Tonight she looked up trails in her work area, and was looking up picnic stuff.
She does all this on the couch beside me, obviously laptop tilted away.
There's obviously major problems, just need to some outside takes, before I spend $$$ and hours on counselling. Or if I need to get crafty and find a way to catch them redhanded. (Tough without access to her phone and letting her know i was tracking her by her old phone.)