Tony couldn't bring himself to be even remotely jealous at the attention Steve was getting from pepper. he had her all of the time, and he didn't really mind sharing her. He'd shared her with his other self, and Steve is his best friend.
"Hey, you. Already charming my daughter and she's not even out of the womb," he said, wagging a finger at Steve. "She's been very active lately. Christ, it's not even seven months yet and I'm already ready for this baby to be here." Tony got nervous when he thought about having that baby. He just didn't want anything to cause problems with her.