Cousining

Acting like you like someone when you really are just trying to get something from them.

Acting like you are close to someone, as if they are family, when you are actually trying to get close to them so you are in a better position to hurt or exploit them.

Treating someone like you are close to them, to get them to lower their guard, when in reality you have bad intentions.

Why are you cousining me?

Don't cousin me!