Originally Posted by The Caped Knight
It makes sense since Peggy is alive . Steve & Peggy need to have their closure before Sharon takes her rightful place by Cap's side as his leading lady .
Marvel has a history of changing the love interests in the MCU from the comic book universe, so perhaps Sharon isn't going to be Steve's girlfriend. Tony Stark is still with Pepper Potts, who is Happy Hogan's wife in the comics. Thor has been with Jane Foster thus far and ignored Odin's urging to take up with Sif.
It is entirely possible that Steve Rogers will never so much as look at Sharon Carter in the films.