Because we don't want to be a dog on a lead, maybe?

A woman who phones constantly while you are out enjoying yourself with pals or at work is a control freak to a man. While she says it is because she cares.

It is probably jealousy, the cause of many problems, a desire to own someone. We are animals of instinct, maybe monogamy is artificial?

All that does is drive him into the arms of another.

These are the age old questions of the differences between the sexes.