There is something about the female psyche which is intensely social, and the most trivial conversations become part of the process of bonding. This perhaps is what causes the difference in message in sms, facebook, etc. They may appear trivial (e.g. I’m here, doing this) but there will be a lot more un-stated below the surface (i.e. I’m here talking to YOU and I’m happy to be talking to you rather than someone else) A form of commitment.