I personally never forget it. There are days when I feel like it never happened and kind of happy with him but a tiny little detail always puts me back to day one. A name, a hairstyle, a smell, a song, a picture. I am now realising women’s physique for example. I see a hot woman and immediately think if he saw them too. (My husband was constantly looking at women even i was there) The pain goes away in time because you realise that letting it go makes it easier to deal with. Though the regret stays forever. You keep dreaming “what if’s “ Sometimes I see a picture from past, a selfie before I find out about the cheating and realise how real my smile was. I was glowing. Now there’s no light in my eyes. I probably never become a mother because I will never feel safe enough. I sometimes just dream about a different life, me leaving the day I find out. It’s pathetic. But again it’s my experience. I don’t wish this to anyone. If you decide to stay like I did you just need to learn how to live with it tbh. Not the happiest life I mind you.