100% - you will be triggered by things, walk past a pub you had a first date in, where you got engaged, restaurants you went to, days out. Christmas is a big trigger too. There will be songs that take you back to times. You remember some good times. Then it will be the years you wasted on that person.
One thing I did, was to physically go to as many places as reasonably possible early on. Almost confront that emotion, so if I went there with friends later on it would hold less memories. I binned all old social media posts with us in, got rid of all the photos. They are backed up to a USB for the kids in future but do not exist on my phone. While the house is much the same, redecorated bedroom too.
Even now, 2.5 years later, I still get that. But is is short, I just recall what a nasty person she was and that puts be back in a normal frame of mind.
What I would say, is that (for me and in my opinion) you almost need to forget what happened or it will shape your future. Yes I was lied to, cheated on, humiliated... but I know that not everyone is like that. To be honest it's also the situation - if a relationship is bad both people do things they shouldnt. I didnt trust her, but current relationship, no trust issues at all. If she breaks that it's different but IMO it's a bit like blaming Germans now for WW2. It had nothing to do with them. I reset everything, and took people for who they were. Of course my guard is up a little, and I am not a mug in that respect but I think you need to start from a position of trust and see how it goes.