[God, he didn't know about the arm, he had no idea, and Steve stares at it a moment, a flood of worry and anger rushing through him before he squeezes his eyes shut and reminds himself to focus. He can ask about the arm later.]

You hurt yourself by being alone, is the thing. Please. At least... let me try, for a little while. We can travel together just a few days, and if it doesn't work out, you can leave again.