Quid Pro Quo.
This for that.
Too much Quo,
Too little Quid,
Not enouth that,
A smidgen less  this,
Is the best from the list
Of fatherly advice:
But suffer this,
Let this suffice:
Never take your eyes
Off one another,
Or you'll miss seeing the struggle,
And when to make your move.
That's how to keep your love.