He was all wired up and wouldn't leave the girl alone.
She threatened to bite him a couple of times and that calmed him down.
I then went out, and left the dogs in the same room separated by a fence several days so they can get tired of each other and could let the newness fade.
Worked, they get along fine, but I have to fix one of the dogs.
I think because the Yorky is older that I will fix the girl MiMi.
She's about three and she looks like she already had puppies once before.
From my own experience, neutering is cheaper than spaying, and also, sometimes, the county has vouchers to cover part of the cost. You might want to check with your vet ot the local SPCA.