I have shocked many loved ones and families by 
showing up at the graves of those who became dear to me:
placing some flowers each year.

Some potentially embarrassing questions have gone necessarily unanswered.
How do you explain your attachment for a plumber who dies at age 55
and never knew you while alive, to Herman Hickman's relatives?

These relationships have the drawback of being short due to nature.
But it isn't so bad bad if you are promiscuous anyway.
Also there is a growing trend towards stiff swapping.