She's right, he doesn't like talking about it. He immediately wants to protest when she starts getting everything without him, but then he realizes he wouldn't know what to get and hangs back just out of her bubble, leaning on the opposite counter.

"Won't I just do it?" He doesn't sound happy about it, but what other option did they have? Neither of them are all that easy to trust, and it's not like they don't have good reason. Obadiah, Killian, Maria... Tony sighs, waiting for her cue to step in.