Your feelings are valid.
Don't let anyone tell you to just get over it.
I know you put your heart out to care for this person, but they treated that gift as a right and not a privilege.
I hope you know that your heart is a gift, that it is special and valuable and precious.
I hope you know that this isn't how it's supposed to be, not all people will treat you like this, I promise. The way they treated you is on them, not you.
You shouldn't have to guess what they were thinking about 24/7 because that's not a relationship, that's the game Clue. Your love is not a game.
It's okay not to be okay. It's okay to be "fine." Don't expect yourself to bounce right back. Surround yourself with people to hold you up when you can't by yourself. Surround yourself with people who tell the truth about you so you know what that looks like in a future relationship.
This isn't a court of law. This is your heart. This is your life. Don't lower your standards because of how this person treated you. You are not second best, so never settle for that. You have so much to offer and give. You're one step closer to the one. You are someone's dream girl. That person is being prepared for you right now. Find joy in this fact that someone is waiting just for you.
Don't shut down.
Let yourself feel the emotions you want to feel, but don't isolate yourself. Lies in your mind find power in silence. You are worth listening to. Your voice should be heard. Don't let this person silence you. Use this as motivation and run faster after your passions. Silence the lies with truths.
You are loved. You are beautiful. You are amazing. You are one of a kind. You are worthy. You are valued. You are appreciated.
You might have heard this before by the person who broke your heart, but all of these remain true.
You are strong.
Don't dwell in the past of this relationship.
Don't let them win. Connect with friends that can help you recognize the truth about who you are and who you are becoming. This is your life, now take hold of it and prove them wrong.