Those emotions take time to resolve.
I'm no longer with my addicted ex for 5-6 years now and the anger just resurfaced the other day when I learned he got married.
Then I had to get myself together and come here to re-read my posts (thank you soberrecovery.com for the library) and remind myself of all the pain I did go through (the confusion, the sadness, the pain, the love, the guilt, the worry) and the toxic cycle on repeat x1000 it seemed.
I can say that the anger, for me at least, never goes away. It rears it's ugly head at times. I just got better at recognizing it when it comes back around and to continue to keep pushing on. My life/happiness deserves that effort from ME.
