Pepper wanted to see him kissing Bruce. Who knows what she would do with the idea of him shagging Bruce.

Bruce doesn't even really think twice about what Tony does, mostly because Tony is always trying to do little things like this. "I think he will be. The drugs they used... damn them for it. That's not the kind of thing that should be used on people unless it's a medical emergency. They threw him into a room and used him like a lab rat and two people died because of it!" For a moment, Bruce actually snaps his words before he looks away, eyes closing hard.