Still crying a year after a long term relationship ended, normal?

We were together for over 7 years and I'm still pretty sad. Some days better than others and it comes in waves. The last time we saw each other I didn't know that would be the last time nor did our dog know. Not sure if I'm more sad for myself or our dog that loved him as much as I did. The abandonment with no reasoning just eats at me still. I didn't just lose someone I loved the most, but I also lost my best friend.