No one heard from Tony for weeks. Last they heard was when Clint and Natasha had threatened him. SHIELD was watching the tower and he never left. JARVIS would respond to no calls and not even Pepper spoke to him. And she didn't want to. Neither did Happy or Rhodey.
Clint and Natasha called Pandora to see if she was willing to sneak around and get some answers but when she reported to him. All she knew was that Tony had sealed his lab and the penthouse so tight that she couldn't even get in. Rebekah tried her luck but got the same result.
It seemed odd to them all that Tony would cheat once, not care, and then cut himself off from the outside world.
Curiosity seemed to be rising and it further drove their anger.
It was one thing to do all that and admit to it, giving an explanation. But to do it then cower in hiding?
The Avengers would not put up with that bullshit.