What does 'exclusive but not official' mean to a guy?

Anonymous
he says we are talking and working towards being official and we are having sex and he is not seeing anyone else. but I don't understand the difference between what we have and being official in a guys mind. to me, if your only seeing and talking and having sex with one girl that is the definition of being official...?
What does 'exclusive but not official' mean to a guy?
4 Opinion