I would think everybody does this to some degree.
Is anybody always the same with everyone?
What about your personal feelings for people?
Don't they determine how you behave to someone?
Do you behave with your partner as you do with your neighbor?
When you are out with just the girls or guys are you the same
as when the crowd is mixed, or when you are when you are one on one with a single friend.. what about this friend's gender?
Do you act the same with members of the opposite sex the same way you do with people of the same sex?
Do you act the same way in front of your partners parents as you do your own?
Think about your behavior with your workmates when the boss is around and the the boss isn't..
I could go on.. But I'll spare you.