Trust me not!

I am so confused about TRUST issues. Trust is a secret to a lasting relationship.. yeah i have always witnessed that. "Don't you trust me?" or "You have to trust me". I always hear these lines from guys who are not really trustworthy. Guys who always fool around and when they hurt their loved ones, it will always end with. Don't you trust me? and they will just live happily ever after.sigggh.. TRUST.