Love should be paid with love.
More Portuguese Proverbs:
A dog in the manger, that neither eats nor lets others eat.Portuguese
For lack of men they made my father a justice.
Portuguese
An innocent heart suspects no guile.
Portuguese
Thinking of where you are going, you forget from whence you came.
Portuguese
If you want clear water, draw it from the spring.
Portuguese
Better anticipate than be anticipated.
Portuguese