hi. you can always attempt to introduce a new chinchilla, but it doesn't mean it will work. some chinchillas just do not get along. you can always get a cuddle buddy.. i 'm thinking about making them for my website so i might have something soon to let you know.
not knowing their backgrounds is a good reason not to breed. but if he is attemping the deed, you might want to get him out of there soon, with pregnancy, there could be many problems.. there doesn't have to be, so i don't mean to scare you, i'm just saying there could be.
and if you haven't found a chinny safe site for your supplies yet, take a peak at mine if you have a moment, hopefully you will like it.
jean