Why does he insist that I know his whereabouts?

I have been seeing a guy for about 3 weeks. Then he decided to tell me that our time would be limited on the weekends due to a few things he has planned coming up and he needs to do some things with his 17 year old son. He always calls to tell me his whereabouts, how busy his day is and if he can call me later or not. Why does he insist that I know his whereabouts?
Why does he insist that I know his whereabouts?
Post Opinion