The MCU definitely does not prioritize the romantic relationships of the world's mightiest heroes. MCU ships are limited to the amount of time Tony Stark can actually spend on-screen with Pepper Potts and whether Peter Parker will get together with MJ. However, since the Marvel fandom is so grand, there are limitless fanart and fictional imaginings of non-canonical MCU character pairings.
For those who don't know, Stucky - the non-canonical coupling of Steve Rogers and his best bro Bucky Barnes - is one of the leading OTPs (one true pairings) when it comes to Avengers ships. And the unexpected Loki/Grandmaster ship set sail in the fandom shortly after Tom Hiddleston and Jeff Goldbloom endorsed the off-kiltered couple post Thor: Ragnarok - one of the best Marvel movies.
Whatever your OTP is, vote up the perfect couples that are not yet canon in the MCU.