"MY MIGHT. KNOWS. NO. BOUNDS!"
We literally breed first-stage evolutions in-game, basically toddlers. That's the ugly truth.A Dinosaur having an unrequited crush on a Human is slightly less akward than a Humanoid Rabbit having crush a Rodent (which may or may not have been requited depending on how you viewed their interactions when Dawn returned in BW)
Just try to imagine a Cinderace crushing on a Togemaru.
If that makes you feel uncomfortable then you'll know where I'm coming from
And more often than not, one of the breeders is a Ditto that has really gone around thousands of times over.