- Natasha – How long until you trust me?
- Bruce – It's not you I don't trust
- ―Getting closer
Natasha and Bruce meet in Calcutta, where Dr. Banner has taken refuge in order to help people as a doctor. She is sent by Nick Fury to bring him into the fold and Bruce doesn't trust her — or S.H.I.E.L.D. — and is very antagonistic towards her. After the attack by Loki's brainwashed cohorts, Natasha attempts to keep Dr. Banner calm, even calling him Bruce although they have nary interacted at that point. Alas, he transforms and just before Thor throttles the Hulk, Natasha is face to face with him and terrified.
Following the dissolution of S.H.I.E.L.D., the Avengers work to retrieve Loki's sceptre and Natasha is tasked with calming The Hulk back to Dr. Banner. While she is still terrified, they share a sweet, intimate connection as she gently touches that Hulk's hand and arm. Natasha tries to assuage Bruce afterwards that he is not evil, but that he saves lives with his strength.
At the party they flirt and Natasha tells him that he's unlike anyone she knows, letting Bruce know that she hopes they can start something real. Bruce is hesitant, perhaps scared still of what that means with the Hulk, but Steve tells him that he hasn't seen Natasha like that with anyone before — including Steve himself.
- “Fact is he's not like anybody I've ever known. All my friends are fighters — and here comes this guy. Spends his life avoiding the fight because he knows he'll win”
- —Natasha to Bruce
- “She's not the most open person in the world. But with you she seems very relaxed”
- —Steve to Bruce