Snakes are typically thought to be cold-blooded, which is not true, as they are in fact quite sensitive, but prefer not to show their weaknesses to the world. Adopt an inductive manner of communication when talking to Snakes, as they need to feel that you understand them.
They are great skeptics, so you should prove you an honest person to get close to them. Moreover, Snakes are a bit narcissistic; they will feel extremely jealous if you try to show off in front of them and may even take a stand against you. Once you chose a Snake as your life-long partner, you are supposed to be wild about them always.