Re: How do you feel when....
The fact that he is successful in what he is doing means that he is a capable person but at the same time extremely attached to his family. Unless you feel that you don't get your share of love and attention, I think you shouldn't worry about the display of affection by his family. First of all they are visiting so it isn't like you have to deal with it for a long time, and also his sharing details with them is because he probably likes their responses, nothing to be threatened about. Your worries should arise only if you feel alienated or left out...which I don't think is the case. This kind of behavior may or may not go away but with time you will learn to handle it better.