I say use your own judgment, that should be influenced by all of the replies you get to this question.
For me, I kept my pair together for a few weeks until I just got fed up of hearing the female squeaking and the male running after her daily and abusing her. He was extremely rough, but that was probably because he was a bit bigger than her. It seemed she wasn't really eating when housed together with the male.
I think it varies from situation to situation. For me, the best thing for the animals I felt was separating them so the female got her own 18 x18 x 24 tank. If you feel after a few weeks that things aren't so bad, then by all means keep them together. However, aggression is pretty normal to start off with. Good luck!
1.1.6 Rhacodactylus cilliatus
0.0.1 Rhacodactylus leachianus