Tony had pulled Bruce over by him, knowing that he was likely a little skittish. But it would be good for him, and deep down Bruce must have known it too since he hadn't immediately run off. Pepper was chatting up people, so he turned to Loki.
"Okay, so she's the girlfriend, I get that. Who's the big blonde then? Most people wait until the third date for noogies." He had no idea they knew each other already.