If you know someone who lost someone dear to them, don’t be afraid to talk about their love one who has passed. Grief is all consuming.
Acknowledge the anniversary of their passing, the big holidays, the memories you share of the person.
Odds are they are thinking of that person every single day, for years.
Don’t worry that it’ll make them sad if you bring it up, it may give them an island of community for a few minutes in an otherwise endless ocean of remembering.