Have you ever asked one of your friends to pretend that you guys are dating?

I have
I asked my best friend to be my fake girlfriend a lot of time (sometime she ask me too) because sometime when someone confess to us or hit on us we just don't know how to turn them down without saying mean words like we are known to have a foul mouth at our school, so from time to time we pretend that we are dating... Some of my friends know that we are pretending some thinks it's true because we are so close and we share everything and when she need something I always give it to her (she's the only person who knows my Netflix password).