You, my friend, have a heck of a problem. How do discourage one and not the other.
You could of course set live traps and rid yourself of the one you don't want. And keep the one you want.
Doubt that there is anyway to keep the skunks away except trap or shoot.
We, my son and others, have been waging a war against skunks for several years. And now we have as many skunks as ever.
Keep us posted.