yeah, what he said.
Women need to know that when are with them, you are not preoccupied with something else. Preoccupation tells us, "you're not that important." however calling more than say once a day, and usually I would suggest no more than 2X per week at first, thats just creepy.
We want to be important, but we don't want you so focused on us that we can't avoid you when we want to.