How do I gain trust back in my parents?

[Southbound]

Well Ellie, you shouldn't have reactivated it without their permission. But if it's really that big of deal to you to have a FB account, then you should come up with a plan to present to your parents. Make sure you include all the reasons you want the account and be sure to explain all the security features to your parents and let them know that you want them to Monitor your account for any unusual activity to keep you safe. As for rebuilding the trust, that's a different matter. Once trust is lost it's often hard to get back. You best solution is to follow their rules regardless of how silly you think they are and if there is something you simply can not follow make sure you have a very mature argument and ask to speak to them about it and hopefully come to a peaceful resolution that everyone can live with without loosing their trust again.