Corinthians 13

(I use this one a lot)

Love is patient and kind; 
love is not jealous or boastful;
 it is not arrogant or rude. 
Love does not insist on its own way; 
it is not irritable or resentful; 
it does not rejoice at wrong, 
but rejoices in the right. 
Love bears all things, 
believes all things, 
hopes all things, 
endures all things. 
Love never ends.