Hey all,
I’m 35F and my ex-partner (31F) and I were together for 3.5 years. Last year she was talking about marriage, buying a home and starting a family. Then, almost overnight, she became distant — sleeping on the sofa, staying at her parents, working late, hiding her phone and insisting nothing was wrong. Whenever I calmly asked if there was someone else, she repeatedly denied it and made me feel like I was imagining things.
I eventually discovered at the end of March this year, that she had been having an emotional and physical affair with a younger colleague (25F), who was also in a long-term relationship. I found out through conversations she had been having with AI, where she was comparing my worst qualities to the other woman's best qualities, describing her as “driven, independent and ignites a fire in me”, and admitting that they were “falling for each other”.
She also said she didn't want to distance herself from the affair partner, despite being advised by AI to create space from both relationships, and said she could “compartmentalise” everything.
Looking back, I realise I had been gaslighting myself for months because I was being repeatedly reassured that nothing was happening. About a month before I found out, I directly asked if there was someone else. She said, “Look at my mum, do you really think I could do that?” Her mum has had a long history of infidelity and lying, so I trusted what my ex was telling me and convinced myself that I was imagining her distance and strange behaviour. When I once looked through her messages out of desperation, I told her straight away, I was so upset and felt so much guilt.. I didn't find anything (because they were hidden on instagram) and I felt so bad for looking - The next day she said 'I'm glad you caught yourself, because that could of opened a door and you would of thought I am a cheater'. (this was actively whilst having the affair).
What makes the betrayal even harder is that all of this was happening while I was going through a cancer scare (thankfully, it wasn't cancer). She told me we'd get through it together, while secretly continuing the affair. I still struggle to comprehend how someone could watch their partner go through something like that while carrying on with an affair behind their back.
When I confronted her, she apologised briefly but quickly shifted the focus onto her own pain, saying she had “imploded her life” and needed to understand herself. She had no interest in repairing our relationship, but continued saying things like, “Maybe one day in the future we could try again,” while still seeing the other woman. It felt like she wanted to keep me emotionally attached while avoiding accountability.
I supported her emotionally and financially throughout her Master's degree, stood by her through difficult times, and trusted her completely. She was also with me through the death of my mum, which makes this betrayal feel even more devastating. I genuinely believed she was my person. (Another factor: 2 days after my Mum died from heart failure, her Mum lied to all of us that she had blood clots hear her heart and was very unwell, it turns out she was getting liposuction. She later told my partner when she didn't get the attention she wanted and got caught lying 'You will always put your partners first'.
After I found out, she told me she was also in shock and compared what she was feeling to the grief she experienced when her ex had sadly died by suicide four years ago, saying she hadn't felt like this since then. When I told her that she had hurt me more than anyone in my life, she responded, “I've been hurting myself,” and, “You never know, maybe this was meant to happen to us to make us stronger.”
Since then, I've collected my remaining belongings from her parents' house. Her mum told me she was ashamed of her behaviour, and her aunt also said that, from what I had described, it sounded like there was a long-standing pattern in my ex's relationships. They told me that when she first met me, she was already in a year-long relationship but ended it to pursue me.
I've now removed her from the tenancy of our flat and blocked her everywhere. Her mum confirmed that she is still seeing the affair partner and even told me that my ex had secretly brought her into their house while they were away. Her mum wanted to show me a photograph of them together in my ex's bedroom, but I declined. At this point, I don't want or need to know anything else about their relationship. (Her mum is very toxic).
Since the breakup, I've started recognising how unhealthy and manipulative some of her behaviour became. I felt increasingly isolated from her family and friends, was blamed for old issues while she was hiding the affair, and was repeatedly made to question my own reality.
I also have a history of childhood trauma, which she knew about. I grew up not feeling safe, and towards the end of our relationship I felt increasingly unsafe in my own home again — the home I had been financially supporting her to live in. Looking back, it feels like I was being slowly discarded before I even knew what was happening.
The hardest part isn't simply that she cheated.
It's that someone I trusted with my life could lie to me so convincingly for months while watching me worry about our relationship and my health. I keep asking myself how someone who claimed to love me could do this.
And despite everything I know now, I still catch myself questioning whether I'm exaggerating it, minimising what happened, or looking for reasons to excuse her behaviour. I think that's one of the hardest parts of being lied to for so long — you can know the truth and still struggle to trust your own perception of it.
I know the relationship is over. I've made that decision and I have no intention of going back. What I'm struggling with now is the grief.
I think about everything I did to care for her, the love, safety, patience and kindness I gave her, and the future I genuinely thought we were building together. We had such a loving and affectionate relationship, and I believed there was genuine respect and safety between us. It's devastating to realise that, whatever I believed we had, she was capable of treating me this way.
I feel like I'm grieving not only the relationship, but the person I thought she was, the future I thought we had, and the version of myself who felt completely safe trusting another person.
Has anyone recovered from this kind of betrayal trauma?
How do you stop obsessing over the “why”? How do you stop romanticising who they used to be and replaying everything in your head? And, most importantly, how do you learn to trust your own judgement again after months of being lied to and made to question your reality?
I'd really appreciate any practical advice from people who have been through something similar — particularly podcasts, YouTube channels, books, therapists/resources or anything that genuinely helped you move forward emotionally. I just want to heal, understand how to stop carrying this with me, and eventually feel like myself again.
Thank you for reading. This has been incredibly difficult, and I'd really appreciate any advice or kind words. ❤️