Valentines Can Do the Math

Valentines can do the math:
More than one is none.
Intimacy is intimate,
Else one must be alone.

One can be a Valentine
Only if one will
Take one for oneself, and then
Let the heart be still.

Valentines are all in one:
Parent, child, friend,
Pet and plaything, counselor,
Nurse, guide, journey’s end.

Valentines are never perfect,
Though they patient prove.
What one can expect of them
Depends upon one's love.