This would/could be titled Facebook Messages or something like that.

I was reminded of you today. I'm sorry I keep messaging you. I know we aren't together anymore, and I don't want to be. But it hurts that you don't talk to me. I know you stand up for me. I see you look at me at school. I see the pained smile on your face as you turn and walk away every time I try to talk to you, and it hurts me. I never wanted to hurt you. Please forgive me. Answer the messages I've sent. I know you've seen them. But yet you say nothing. Please...I miss being friends.
Message sent.
Message seen.

Noooo, this totally isn't a real story. Psh. Well, enjoy! I'd like reading a story based off of this..