Is it just me or can anyone just not stop grieving

I dunno I always feel people forget about they’re loved ones after like 5 years or so but with me I remember every pet who passed away, every loved one that passed away. 
for instance the ones that hit me the most to this day is my pet dog Bruce who died 7 years ago and I won’t ever forget the last glimpse I saw of his face. 
Another one which hurts me talking about is my Nan who died an awful death and she died 11 years in October. 
Sometimes when I fall asleep I see them both together and I wake up totally upset and I know it sounds cringe but I sometimes hug the photo frame of my dog Bruce.