Too bad there was actually nothing between them. They would still make a good couple. And I have to say I know the author from Discord (long story) and I think he could even add a slight kiss from Shimmy to Waifu-Stealer to made it cuter (he did it in a Steven Universe parody and it was so heart-warming…).
 
But can you imagine what kind of badumsquishesque creature would result of a romance like this? For more info, you can read Osamu Tezuka’s Ode to Kirihito or watch David Cronenberg’s The Fly. Have fun with it!