Hi, Can any girls here tell me, do you understand what your bf's thinking always?

example :

(1)IS your bf looks moody, but he never want to tell you what happen to him? 

(2) Always when come back from work, he did no much thing to talk with you, but when outside mamak, he did got a lot of thing to talks with friends?

Why always i cant get understand what's men thinking ? If being a couples, we need to share thing to each others,correct?

Girls is always worry,care,concern and love to tell everything if she is facing some funny ,sad,happy happens, but why guys wont? Is they really so good and everything is keep in mind and dont want girls(gf) to worry about??

so many questions am i, because i am confusing.

guys dowan to tell out their problems to their gf..is because they dont want the gf to get worry and stressed up with their problems..they prefer telling it to their friends..so just let him be the way he want..can just ask lah..but he dowan to tell then just dont ask him again n again lor..coz it will makes him sick...