Betty is... Well, it's hard for him to say what she is. He's never stopped loving her. Even now, even with Tony, he holds his love for her apart from his feelings for Tony. If she turned up here though, he wouldn't dump Tony for her. Really, he'd be torn between the two of them, and he thinks what he and Tony have is even different than what Betty had with that Samson guy. Maybe he'd feel guilty for that if he let himself think about it, but he and Betty have said their goodbyes now, twice. He wants her to have her own life; he wants her to put him behind her.

Bruce is uncomfortable, and he looks it too; he'd been trying not to retreat into himself, but that does it; he can't meet Tony's eyes anymore, and his shoulders hunch, his body pulling in on itself. He's pulling away from Tony, shrinking in and away from the idea that the Hulk could have his own wants and needs. Who cares about them? Why would anyone care about what he needs? What he feels?

Tony, apparently.

"Sounds like you two had a good talk," he mumbles so he can say something. He clears his throat and tries to push Tony off him instead of pulling him closer. "Do you need help with the tiger?"

He's running from this conversation.