By this time your new budgie would still be in quarantine, since you got her yesterday: http://talkbudgies.com/new-budgie-ar...ew-budgie.html
Males can certainly have more difficult temperaments and also exhibit aggression, this is not something exclusive to just one gender and it will mainly depend on the budgie's individual personality as well as multiple factors, such as the budgie's parentage (temperament is inheritable and it only takes one parent to with a more violent temperament to pass the less than desirable trait to the offspring), the way the budgie has been raised and later on socialized will also matter.
At this point it's still soon to be worried. You should follow quarantine for now and later on start to very slowly introduce your budgies.
All the pertinent information on this subject has already been conveyed on your previous thread.
Since you have your male budgie for 7 months, you should by now have a good grasp of his personality and to determine if he has shown more of a dominant personality or not.
Later on when you start to introduce your budgies properly, you will have a better idea of your male's behaviour by watching how he interacts with your female. If in fact there is bullying and it is done in a consistent manner, then having your budgies housed in separate cages would be the best option when thinking of their general safety and physical as well as mental welfare.