Live in Cairo with the girlfriend

Hi everyone, I would know if me and my girlfriend can live together without being married. Is there any problem? Is It legal?
Thank you

at hotels or any places need paper, you are not allowed...but in apartment, I'm not sure....u may be allowed, just in case, it'd be better if u handle it with the owner
  [but not as if u asking for his/her permission u know what I mean!]

U can rent an apartment in Maadi or zamalek areas. 
Are u here now?