Males and females should only be housed together for breeding and only for short periods. Males are sexually mature way before females and you run the risk of him breeding with her before she's really ready.
BPs are not social snakes so they don't enjoy each others company. Housing them together can be done but is never recommended. It's unlikely that they will eat each other but it can happen. In addition to this housing them together makes proper documentation impossible. Also if one gets sick, the other will as well. Honestly you will be 100% better off not housing them together.