I am just seeing this today. Otherwise, I would've responded much sooner.
I know the devastation you are feeling. My wife and I have lost many of our furkids recently. One of them was our oldest pug. He died because our second youngest dog attacked and killed him. So we ended up losing her too.
Our second youngest pug (now our only pug) Bambi, looks just like Milo. She is getting up there in years too. She will be 11 in September. Bambi is my loyal companion. She is almost always at my side. She has a bed right next to my computers where I spend most of my time. Our other dog, Dakota is just a baby. He is 17 months. He's the "brat". He is constantly getting into trouble, always wants to play and has boundless amounts of energy. But he's also extremely intelligent and very easy to train.
Yet with all this going on, I still miss our other dogs and cats terribly. But slowly but surely, it's getting less painful. So, yes, it will get easier. Yes, you can allow yourself to heal. There is no shame or guilt in moving on with your life. Even thinking about getting another dog when you are ready. Milo's goal in life was to make you happy. There is no reason to believe that goal changed when he moved on. You can be very proud of the life you gave him. Pugs don't live almost 15 years unless their human gave them lots of love and care.
My heartbreaks for you. I pray that you will find peace and comfort soon. But it is a slow process. Just know that, like humans, dogs have eternal souls. Milo is looking down on you with love and pride.
And the next time you feel something brush up against your leg or you think you hear a happy little "yip" but look to see that nothing is there...don't be so sure.
