Ok hear me out...
A headcannon that there is no voldy, and therefore no (to minimal and not on psychotic) rivalry and all four seekers (harry, cho, Cedric and draco) like to hang out sometimes to play quiddich and joke around
Also in addition to that either they all have a poly relationship or they all go into separate relationships (with each other). Depending on which you prefer.
And there just fucking HAPPY.