Welcome to R. slash True Off My Chest, where OP discovers that her husband has been having an affair for over a decade.

Our next credit post is from Lovecats.

I recently found out that my 42 year old husband is cheating on me with our married best friend who's 32.

She's the godmother to our four children. They don't know that I know, but I caught them making out at the end of our driveway when he was seeing her off after dinner with our family.

We live on a small acreage and the driveway is a long way off from the main house.

She had forgotten some crockery at the house and I decided to walk it over because for some reason the two of them always took a long time to say goodbye. Now I know why. That's when I saw them lit up by her car's headlights, making out in the front seat with our best friend straddling my husband.

In shock, I didn't know whether to throw her pyrex at the car or just walk away.

I decided the latter. I was too shocked to cry or be angry.

When my husband got back, I had to pretend like everything was normal. I know that it's stupid, but I couldn't sleep last night and I decided to go through his phone.

She was obviously under a pseudonym, but I found a handful of their messages dating two to three years back.

Her husband doesn't know.

He's currently posted overseas as a diplomat.

I'm sick with rage and betrayal.

I'm lost and I have no idea what steps to take next.

Then OP posted an update. As to what I'm going to do now, a part of me wants to confront my husband and see what lame excuse he has but I need to get away from him.

This level of betrayal physically hurts.

I can't help but think of all the times that we spent together over the years and for how long our families were fooled.

My mind is going crazy.

When she was single, he would rescue her from some bad dates or the times they were alone

in my house when the kids and I were out.

I remember how irrationally angry he was when he found out that she had a boyfriend and then

chose to marry him.

...