moving with cats

Question
I integrated three cats in July. My boyfriends 9 year olds, male and female who grew up together both fixed. My 7 year old male also fixed. They have lived together for 10 months. The males get along but his female does not like my male. She will hiss and swat at him when he gets too close and sometimes growl. He is not aggressive just interested in her but she wont tolerate him so she has her spot that shes safe on and occasionally slinks around, which peaks his interest so he'll chase her, she'll hiss and swat and spit then he'll go away. My question is...we are moving in September and I don't know how to go about bringing them in the new house. I don't know if i bring them together or separate them.  I'm scared to bring them together because the female and my male have issues so how would i let them in the same safe room in the new place, but I dont want any of them claiming that as their territory.  In the current place his cats were there a day before mine, I wonder if that's why shes like that to him.What should I do?

Answer
Hi Georgia,

The website

http://www.sspca.org/editor/uploaded/pdfs/Aggression%20Between%20Family%20Cats.p...

Explains aggression between female cats, male cats, and family cats.

Domestic cats tend to be solitary. They do not usually form large groups with complex social structures as do dogs. Cats are also very territorial by nature, some more so than others. However because their social organizations is somewhat flexible, some cats are relatively tolerant of sharing their house and territory with multiple cats. It is not uncommon for a cat to tolerate certain other family cats, but not get along with others in the house. In general though, the more cats you have, the more likely it is that some of your cats 'vi II begin fighting with each other. This may be more likely to happen if you have many cats in a relatively small living space.

The factors that determine how well cats will get along together are not fully understood. Cats who are well socialized, meaning they had many pleasant experiences with other cats during kittenhood, will likely be more sociable than cats who have not been around many other cats. On the other hand, "street cats' who are in the habit of fighting with other cats in order to defend their territory and food resources, may not do well in a multi-cat household. Genetic factors also influence a cat's temperament, so friendly parents are probably more likely to produce friendly offspring. Owners can help prevent fighting problems from developing by properly introducing a new cat to the household.

The most common types of aggressive behavior that occur between family cats are territorial, intermale, defensive, and redirected. Each of these is explained provided below.

http://www.catcaresociety.org/social.html

Hope this helps,

Ben.