I am so sorry for your loss. I to went though the same thing last year, I loss my baby boy, he was only 8yrs and it broke me, he was all i had and we had been though everything together but is really does get better, for a long time i felt such pain to the point that i collapsed but now i think of my lil Major and i smile and me and my partner are forever laughing at all the little things he used to do, like when he would deliberately wipe his sloppery chops all over are nice clothes or stamp his feet when he wasn't getting his own way, i never though i would ever have another dog certainly not a Boxer again due to the fact they bring so much in to your life and leave way to early but i have. I now have a lovely little boxer pup and though he isn't Major he is just as precious to me.
My thoughts are with you. X