[mangoandmimi]

Doesn't sound like they're getting along if there's squeaking and jumping on the other now, it often does happen where their tolerance of each other just goes downhill especially when they mature. Since they're not litter mates it made it even more likely really. Even if they sometimes still sleep together it doesn't really mean anything as often they'll do that even after fights. It does sound like it's about time to separate them, they'll both be happier in their own space where there isn't competition. It may take them a few days maybe over a week to get used to life alone but don't worry about it. It's much better to separate before the fighting gets out of hand instead of being too late.