He just let her go, just like that. No argument, no nothing. Something very unlike Tony to just give up on an argument until he'd won it. If she wanted to leave, then he was going to watch her pack her things and walk out of the door himself, rather than go and hide in his workshop. He was going to force himself to watch the best thing he'd ever had just leave because he couldn't find his bearing to keep them together. "If you decide to leave, then I have something for you to take with you, but it's down in the workshop."