Obsessive compulsive texting disorder (O.C.T.D.)
You can't stop texting even if your fingers fall off and your brain explodes.
Hey, I'm texting you right now. I will not stop until you reply.
I just sent you 47 texts about my cat. He's fine. I'm not.
You said you'd text me back. I'm waiting. I'm texting you right now. I'm not done yet.