>>45328487Can't you just have a pokemon/human romance and still keep the story and personality good? Some character's grow and change a lot from having a lover, it doesn't really matter if its a human or a Pokemon, don't think many people would care either way. Its all about reasoning and motives.
If your OC falls in love with a Pokemon and they have a relationship, I think the fun thing to do with that is figure out what/how that relationship has or is affecting their lives. What does the human learn from the pokemon what does the pokemon learn from the human, etc. etc. Make a story out of it.