>>93751400John Byrne broke the entire concept of Vision as being as human as anyone else, despite his synthetic body, and most readers, writers, and editors ever since have struggled to see him as a person. Thanks to Byrne, and also thanks to the works of Gerard Jones, Busick, and Remender, there are generations who think "Wonderman is 'the real Vision', he and Wanda are meant to be together", and Vision's mind is an exact copy of his.
>two characters are nothing alike>one is a copy of the other>makes perfect senseA lot of time and effort has been put into ruining this pairing long before King's take on their romance, or before Waid had Vision delete his emotions in front of Wanda, or before Bendis had Wanda kill Vision. But that is a clear trend for making them do awful, traumatic things to each other, like someone at Marvel really dislikes them.
Even so, despite times they've attempted to convince themselves otherwise, neither of them has ever really managed to truly, permanently get over each other. There's always the sense they could work things out if they just tried to talk it out, and if the world would just leave them alone for a while.