Я хочу лише одну дівчину для свого високого лібідо, ми можемо змусити #masturbation разом

So, absolutely nothing until level 15 means the only way to level it up would be to send it out into battle, switch over to another Pokemon, and have that Pokemon win, in which case the experience would be split between the two.

It's just... you're better off waiting on this one if you want to raise it.