>>4689355710-20%. Primarily because not all Gardevoir (or Gallade) like humans romantically and not all Humans like Gardevoir or Gallade romantically. You'd need a lot of factors to match to have that work. One of the bigger factors being: You have to be in a location where its legal to marry a Pokemon. If its not possible, then it just can't happen. You could date or just be romantically involved however