What does it mean when a guy won't talk to his friends about his girlfriend?

I'm not sure but it could be 4 many reasons like: He's usually known as a PLAYER around his friends so he's not used/ known to settle down.......if you have a problem with his friends or the other way around he might be afraid of what his friends might say wen they find out he's dating you.......or he probably doesn't want his freinds to say somethin' like "tell me u tapped dat by now!!!!!" ........another reason is that he probably doesn't want too many or ANY people know what u and your man r doin'......like .........maybe he feels that whayever u 2 do is none of anyone's business.....maybe he wants to keep it on the D.L......don't worry....... it won't last long!!!!!!!!!!! actualy they will if they are mad at you they will start rumors. And as a guy it really ticks you ,no it makes you really mad when your friends talk about their girlfriend alot. It could also be that he doesnt want any one to know because girls some times play with a guys feelings and if they are he wont want ANY ONE to know that he 1 fell for a trap 2 that it is SOOOOO embarising 3 it hurts and we sometimes like no one to know that we feel hurt and we bottle it all up so we can live the same life as yesterday.