I don't know why I'm all of a sudden posting about love relationships in movies and television, but normally I don't really care for the love stories in MARVEL; as most of them were already established years in advanced (and MARVEL is NOT about romance), but I feel that Wanda and Sam should have a chance with one another.
They may not be a likely couple, but when the first thought entered my mind, I was like...that might work! After everything the both of them have been through prior to meeting the Avengers, they might have more in common than you think.
Both have dealt with personal loss and severe grief
- Sam lost his wingman, Riley, served in two tours and went back home with (possible) PTS.
- Wanda was orphaned at 10, used as scientific research for HYDRA and then lost her brother.
After Wanda lost her brother (literally in battle), the one person who might be able to help her cope is Sam who is also a grief counselor at the VA in Washington, DC.
Wanda's connections with HYDRA (for however long she was there) might also aid Sam and Steve into finding Bucky. Chances are she ran into him or at least knows of him during her time in HYDRA.
Sam's incredible strength of character and duty driven manner coincides with Wanda's generous personality and sweet nature. Wanda depended on her brother for her confidence and to be her protector and Sam has a natural confidence that makes him a good protector.
I don't know...maybe it will never happen on screen, but I think they would be a good idea and anyways, both deserve a chance at love. The only guy that Wanda has really ever trusted and loved is Pietro, which is fine, but he was still her brother (which also explains their rather awkward physical interaction in Age of Ultron). It's no secret that Sam wants to be in a relationship, but it has to be with someone who understands the work that he's doing and HYDRA, S.H.I.E.L.D., and now, the Avengers have them both on a level of equal understanding.
Call this relational premonitions, fandom predictions, wishful thinking or just fan-fiction inspiration, I think this is a relationship in the making (whether it makes it to screen or not).