Love Letters : Do you know how to write them?

i love to write love letters although my hubby considers it is childish to do this.there were times when i wrote many letters, at the begining of our relationship, he wrote them too at that time.i also wrote many letters to other boys in my teenage, cause i consider it the best way to show my feelings, the easiest way to tell what i feel.now i not write love letters so often,i wrote when my hubby was left but i didn't show him those letters.anyway he has no time to read them.