a lesson to pass on

There is really something to be said about age - about getting older and being a little wiser.  Today, I told a young woman something I wish someone had told me when I was twenty-one (or twenty-eight, or thirty, or heck, a year ago):  

You should never have to convince someone that he should be with you, and should love you.     

You deserve to be with someone who is certain that you're the only one he wants to be with.  No one else. 

Don't settle for anything less than someone's sincere certainty.