Going through a breakup is tough, there's no doubt about it.
You put you time, your energy, all your love into one person for however long you were together and now you're left in the dark. You might not know why it ended, it might've been mutual, or it might've been you.
Either way you're probably hurting. It'll be okay.
For the girls who don't know why it ended: don't worry.
The worst thing you can do to yourself is overthinking. I know the first place to go is 'was it even real?' Questioning every thing they did, every time they touched you, every kiss, every word. Was it even real? Believe in what you had. Don't take anything for what it wasn't. Even if he was playing you (which he probably wasn't,) you need to remember for your sake that what you had was real. He meant everything he said, every time he held you, everything. Don't push him as to why it ended. We've all made that mistake when we care too much. Let him deal with whatever he's going through, because he's obviously going through something. If, once things calm down, he's ready to talk about it, then talk. Don't blame yourself.
For the girls who are going through a 'mutual' breakup: what even is that?
If you're in high school and your significant other is going to college and that's why you broke up, I get it, but it's not 100% necessary (especially if you think you have something good.) To be real with you, you're breaking up so they can sleep with people in college. It's true for every boy I know. Distance isn't that bad, don't afraid to make your feelings heard if you need to and don't feel like you need to make it mutual if that's not what you want. On the other hand, if it really was mutual (which can happen,) then let yourself feel what you have to feel but don't force it.
For the girls who broke up with their significant other: it's okay to be sad!
You're losing someone just as much as they are. Your reasons could be anything, maybe you're also going to college, but don't feel bad. Also hear them out, don't expect every aspect of a breakup to be mutual. Just as much as the girls in a mutual breakup should let themselves feel, your significant other should be able do the same.
For all of the girls going through a breakup: it'll be okay.
Give it time!