know anything about cats?

i'm trying to get my cat used to my boyfriend's cats

my cat is a beautiful girl model-cat who is very dainty but feisty and vindictive.

and his cats are jumpy, isolated ones that are impatient with her. so it's not going very well.

plus my cat goes to the bathroom to get back at me when she gets lonely.

i cannot compute too much information de do da
any suggestions