I have 2 snakes, one male and one female. they are the same age, but the male is slightly larger than the female. I have kept them together since they were about 6 months old. I tried seperating them when I got more space to keep 2 vivs, but they both stopped eating and it seemed all they would do was press their faces against the glass and stare at each other. I put them back together and they started eating again, and resumed their normal movement patterns. I feed them both at the same time, but in seperate containers, and wait until they both calm down before I put them back into their viv. I know that keeping male and female together probably got me in trouble last year as I found eggs and wasn't expecting them. But I left them together and was able to hatch all 6 eggs that I got this year. they are about 4 years old now. I have 2 other snakes, one male and one female that I hope to breed in another year or so, but I am keeping them seperate until they are ready to breed.