Many teens really believe that their parents will get back together. They try very hard to make it happen by being on their best behaviour.
Sometimes this is a way of denying what is really happening, in order to protect yourself from the painful reality.
Chances are, your parents reached this point only after trying very hard to save their relationship, and their decision to split up is final.
It's hard, but it's probably better for you to begin to accept the situation as it really is, and get used to the changes that you are facing, in order to get on with your life.
Separation and divorce are very common these days. That means that many people have been through it themselves, and most probably know someone who has.
Good friends will be glad you've told them. They'll know that you're still you, even though your family is changing.
Parents who never married or chose to live together without getting married—don't have to get a divorce, because there is no marriage to end. But they do need to decide what will happen to their children and how they will divide their property.
There are lots of people around you who can help. Tell your parents, teacher, school counselor, family doctor or another adult you trust. If they can't help you themselves, they should be able to help you find someone who can.
If you aren't getting the help you think you need, keep asking until you get it.
Many teens whose parents split up feel anxious about their own relationships in the future. But just because your parents split up doesn't mean the same thing will happen to you. What happens in your relationships will be up to you, not your parents!