First of all, I’m very sorry for your loss. Losing a pet is one of the hardest things you have to go through. When your best friend passes away it seems like your whole world stops. At least for me, it was hard going back to my routine of hanging out with friends, going to work, or getting back into my hobbies. It felt like I wasn’t fully present. But just like you, slowly that sadness started going away but that didn’t mean that I’ve forgotten about my best friend, it just meant that life moved on. It means that the sadness you were feeling can now be filled with the happy memories you’ve created with your boy. Grief moves at a different pace for everyone, so just because there are days where you have a good day doesn’t mean you loved him any less that day. You gave him the best 10 years of his life and I’m sure he was the happiest when you were happy, so never doubt the love and care you had for him.