

Petra was there for everything. She listened to me cry on the phone at night, went with me to offices, helped me pick a lawyer, and even stayed over a few times when I couldn’t handle being alone in the first weeks. She told me I deserved someone better and that Tomáš would one day realize what he had lost.
She Was Like a Sister to Me
Petra and I had known each other since high school. We went through our first loves, graduation, my pregnancy, and her failed relationships together. I always thought nothing could come between us. During my divorce, I felt like I couldn’t have survived that time without her.
She never really liked Tomáš. At least, that’s what she claimed. She often told me he was lazy, selfish, and didn’t appreciate me the way he should. When I wanted to text him and beg him to come back, it was Petra who took the phone from my hand and told me to keep my dignity.
That’s why it never occurred to me that there could ever be anything between them. It seemed almost impossible. She knew everything about him, including things I’d be ashamed to tell anyone else. She knew how much he had hurt me.
She Started Acting Strange
About a year after the divorce, I noticed Petra had changed. She called less, was often busy, and always gave vague answers when I invited her out. When I asked if something was wrong, she insisted she was just tired from work.

One day, I ran into her in town. She was walking down the street with a smile I hadn’t seen on her face in ages. When she saw me, she looked nervous and quickly hid her phone in her purse. I asked who was texting her, and she laughed it off, saying it was no one important.
I didn’t want to be suspicious. After the divorce, I promised myself I wouldn’t see betrayal everywhere. But something about her behavior didn’t sit right. She was distant, cautious, and suddenly avoided places we used to go together.
I Found Out the Truth by Accident
I found out in the silliest way. My son came back from a weekend with his dad and told me they went on a trip with Aunt Petra. At first, I thought I’d misheard. I asked him which Petra he meant. He looked at me, surprised, and said, “Your Petra, of course.”

I felt sick to my stomach. I didn’t want to interrogate my son, but he let a few things slip on his own. Apparently, Petra had been to Tomáš’s place several times. She cooked dinner, they went to the movies, and once she even stayed overnight.

My son said it all so casually, not realizing what it meant to me. I sat in the kitchen, listening to my own child unknowingly tell me that my best friend was dating my ex-husband.
She Told Me It Just Happened
That evening, I called Petra. She didn’t pick up. I texted her, saying I knew everything and wanted to hear the truth. She replied the next morning, saying we could meet, but asked me not to make a scene.
That made me even angrier. We met at a café we used to go to together. Petra showed up with makeup on, looking nervous, as if she was the one who had to handle an unpleasant conversation.
She told me she and Tomáš had been together for about three months. She said they hadn’t planned it. They just bumped into each other, started texting, and realized they got along well.
“Lucie, I know it looks terrible,” she said. “But it just happened.”
That sentence hit me hard. As if the love between my best friend and my ex-husband had just appeared out of nowhere and they couldn’t do anything about it. As if neither of them had the option to say no.
What Hurt Most Was the Secrecy
The worst part wasn’t just that they started dating. Maybe if Petra had come to me at the very beginning, if she’d told me something unexpected had happened and she didn’t know what to do, it would have hurt too. But at least I’d have felt like she saw me as a person, not an obstacle.
But she lied to me for months. She listened to me when I told her I was afraid of new relationships. She advised me to be careful with men. And all the while, she was seeing the man I had cried over so many nights.
When I told her this, she got defensive. She said Tomáš was no longer my husband and I had no right to decide who he was with. That’s true. I don’t. But she wasn’t just some stranger. She was my best friend.
Tomáš Acted Like It Was No Big Deal
I didn’t talk to Tomáš about it until a few days later. I didn’t want to argue in front of our son. He told me he didn’t mean to hurt me, but that he’s an adult and has the right to a new life. I don’t begrudge him that. But when I asked why Petra, he just shrugged.
He said they’d known each other a long time, always got along, and after the divorce, they started seeing each other differently. That sentence echoed in my mind for a long time. I started recalling all the evenings Petra spent at our place, laughing at his jokes over wine, and I thought it was just natural because we were friends.
I don’t know if anything was going on between them before the divorce. They both say no. Part of me wants to believe them, because otherwise it would hurt even more. But trust is a strange thing. Once it’s broken, you start doubting even the memories that used to be clear.
I Lost Two People at Once
Today, I no longer speak to Petra. I didn’t forbid her from seeing Tomáš, I didn’t scream at her in public, I didn’t make a big scene. I just told her I couldn’t have her in my life right now. She replied that I was punishing her for falling in love.
Maybe that’s how she sees it. But I see it differently. I’m not punishing her for falling in love. I just can’t sit over coffee with someone who knew my deepest pain and still chose to step right into the place where I was most vulnerable.
Because of our son, I still have to communicate with Tomáš. We try to be civil. Petra sometimes shows up with him at drop-offs, and I act calm, even though my stomach knots up every time. My son likes her, and I don’t want to take away someone he’s known since he was little.
The Biggest Change: I Don’t Trust People So Easily Anymore
I used to think a best friend was someone you could tell absolutely everything. Now I’m more careful. I don’t want to be bitter, but something inside me has closed off. When someone says they’ll always stand by me, I don’t believe it so automatically anymore.
Some might say that after a divorce, your ex is a free person and so is your friend. I understand that logically. But the heart doesn’t work according to rules. Some things aren’t forbidden, but they still hurt so much that it takes a long time to recover.
I don’t know if their relationship will last. And honestly, I try not to wish them any harm. I just wish Petra would one day understand that she didn’t take my husband from me. He was already my ex. But she did take away the feeling that there was someone I could confide in without fear.
And maybe that’s even harder to forgive.
💬 Join the Discussion!
This story shows just how painful it can be when, after a divorce, two people you once trusted most become close. Do you think a relationship between your best friend and your ex is a betrayal, or does everyone deserve a fresh start after divorce? Could you forgive something like this? Share your experiences in the comments below!
















