I have a male and a female who are both about two months old. They love lying on top of each other and get along great. My question is how long before I'll need to seperate them. They're so cute together i hate to do it, but I've been told you're supposed to, I just don't know when. My cage divides either into two 4'X 2' enclosures or four 2'X 2'- I also have Leo's. Pls advise.