I have german blue rams which are very similar and got them very young at the point where I thought they were both female. One became a bully and made the other very stressed. Turns out the victim was a male and they've now paired up 3 months after I first got them and are laying eggs!
Because they're so young they should be ok as they will grow up together if they're both female it shouldn't be a problem but if they're both male then they may have to be separated later on. What is your tank size and stocking that you have them in?
Because they're young if they're opposite sex they should pair up naturally or atleast there is a greater chance that way.
Sent from my iPhone using Aquarium Advice