I have a male and female chin in the same cage. They have been mates for well over a year when they use to belong to a friend. They had one kit together almost 1 year ago and after the kit was weaned the dad was placed back in the cage. They haven't had a litter in almost a year and every time the dad tries to mate the mother is very stand off-ish. They get along fine, play together, sleep together, and groom each other. I don't really want them to mate and i planned on separating them but I'm not sure if its necessary. I feel like they are cage mates and not breeding mates anymore. Could it be possible for the mom to never mate with the dad again?