>>49119875the risk depends on the pokemon, statistically speaking a fire, poison, or ice type is much more dangerous, while a water, normal, or grass type is much less dangerous. but additional concerns include the pokemon's moveset, overall size, and attacking stats.
if a pokemon is infatuated with their trainer, I would reccomend declining their advances and explaining that as you consider them part of your family, it'd be really wierd if you were to start dating. this works in 97% of cases, and in the remaining ones may god have mercy on your soul because I have nothing which can help.