What words could be used to label someone who is unimportant?

More specifically, lets say your best friend goes on vacation for a month and leaves you alone. You end up striking conversation with another individual you dont really care about and you perhaps also spend some time together, BUT, that individual is only being used TEMPORARILY while your friend is away so you have... show more More specifically, lets say your best friend goes on vacation for a month and leaves you alone. You end up striking conversation with another individual you dont really care about and you perhaps also spend some time together, BUT, that individual is only being used TEMPORARILY while your friend is away so you have someone to chat with and keep yourself entertained. What word could be used to describe a person like that? A filler? Disposable? What would you label someone who is merely a temporary stand-in while you wait for your friend to come home?
5 answers 5