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.
If there are things you need to know, ask. You have a right to ask questions about what is going to happen and why.
Most parents split up only after trying very hard to save their relationship. Some teens hope and believe that if they try to be on their very best behaviour, their parents will get back together.
However, this plan isn't likely to work, since their parents' decision to split up had nothing to do with them. Their decision to separate or divorce is usually final.
You are not the reason for your parents splitting up. Parents split up because of problems in their relationship.
Ideally, your parents will make the decisions together about who you will live with and how that will work. Your opinion should be taken into account.