Board Thread:General Discussion/@comment-26687285-20150826143538/@comment-26687285-20151021175600

Well, TIH's ending strongly implies that Betty and Bruce won't see each other again for a very long time. And with everything the Avengers films have done with Bruce's character, it's likely that Marvel no longer has much interest in bringing her back into the series, and instead want to try some other things with him (i.e. a relationship with Natasha).

In short, Betty is really more of a memory for Bruce. Just another part of his past, and something that has shaped him into who he is. She is basically to Bruce, what Peggy is to Steve, something he has had to give up because his life has changed too much.

That being said, the presence of General Ross in next year's CA:CW, as well as Hulk now becoming a supporting character in Thor 3, might just change all that. As Marvel may perhaps revisit this dynamic in Cap3 or Infinity War.