The ethical dilemma of facebook "friending"

What do you do when people you know
but with whom you've never been friends
Ask to "friend" you
on facecbook?

It was years, decades ago:
the old conflicts, the hard feelings.
You thought you were over it.
It seems that you're not.

Do you pretend?
Do you swallow pride?
Do you accept the invite
and then just never message?

Living thousands of miles away,
it's not like you'll ever see them.

And if there's trouble,
ignore
can end a flame war.

So maybe it's like the teen talk
"frenemy"
that you keep close
to scrutinize,
letting the Internet
be the glass
between you
and vitriol.