Trust is what a couple have to have in order to be in love. To be in love u have to know that u are letting him/her a chance to break your heart. But trusting them not too. Keeping them intimate to ur emotions and feelings open up a whole new reason why u absolutely love him .
Telling someone you won't cheat and hurt them, telling them u love them and care for them and telling them about the stuff that got them hurt before and trusting they care enuff to understand and not doing it again to you, is TRUST.