Question

If gravitational force acts between you and your friend why don't you pull each other

Answer 1

the amount of force will be directly proportional to the mass of thebody.So in case of you and your friend the gravity works on lesser mass.Therefore force of attraction is also comparatively less.So we cannot find any pull or push between each other.

Answer 2

as the gravitational force does exist in earth because of which we able to stand on the surface of it but it doesn't exist here between the living things ,there supposed to be huge magnet, or some of the molten iron matter is present.