1. Tony/Pepper/Bruce: All I remember about this that Pepper has a realization that Tony gives Bruce a place to stay and encourages their threesome relationship because Bruce is really hard to kill and he is making sure Pepper won't be left alone if he dies.
2. This one had some outside influence taking over Tony or his armour and causing lots of damage. Tony ends up in the hospital. The public thinks that Tony himself was responsible and eventually the recording of the Avengers' coms during the fight is released so that Tony stops being blamed. Natasha was reluctant to have the recording released as her name is mentioned and it totally ruins her undercover ability.