tasteful sidebae

A person who is manipulated into the middle of being in the friend zone and in an official romance. The person who is manipulating usually keeps their tasteful sidebae interested with suggestive conversation. Often they are USED as plan B's when a primary relationship doesn't work out.

Bobby : So are Joe and Jenny going out now?
Bill : Nah. Joe's her tasteful sidebae.
Joe : Fuck you, Bill.