Separating Buttons

When do I need to separate my buttons? They hatched long enough ago that they are laying eggs of their own now. I thought they might pair up so I would know who to put in a cage with who but so far no sign of pairing. I have 2 males and 3 females and both of the males seem to like the same female the best- though they give meal worms indiscriminately (and occasionally the males even trade meal worms back and forth between each other). They all sleep in a big button pile. I have the 5 of them in a pretty big cage (3'2" x 1'6") and am looking for homes for them (would love to just give someone the cagefull so they can sort it out if that wouldn't be negligent). There is no fighting between the males, and the only sign of unrest is that one of the males chases the females around and around. What to do? And if to separate- how do I match make?