My advice would be to just to let her enjoy her own space with you.. No need forcing the issue unless you are proficient with dog handling and know how to make them get laong.. That can  end up being a real hassle.\

 

There is no perfect answer.  Getting a more submissive tolerant dog may  make her   pick on him as an easy target.. Getting a domiant male will surely put her in her place, but if he doestn, you can have some battles  ensue..

 

No quickl easy answer for that . The only thing you need to do is decide if it  what you really want, then decide what measures are you willing to take to make sure it works for you?

 

Fixing helps if not done already....I woudl suggect that the male you get should probably be larger than her.. a small dog just may not work out well...