You don't get anybody to open up like that, it come when it comes. When he is comfortable enough with you that you won't stomp on his heart, he will open up to you.
I have known people who wanted me to 'not hide feelings' but they never fully understood that the 'feelings' they were looking for and wanting to find really didnt exist in the first place. They just refused to believe it because they were programmed to believe everyone has those feelings when in reality some dont.
some people might not believe in love and not have any feelings about it. They also might have very deep feelings for the distruction of the planet and therefore have deep feelings about global warming. So what I am saying is that you can assume everyone has the same value system and thus same feelings as you might expect them to .Sometimes people are not hiding they just literally dont have what you assume they do.
people who dont believe in love want sex too and at least from my experience is EXTREEMLY rare to find a woman who is like that so maybe is just putting in the time.
regardless though I real point is that people have assumed things about me based on their social understanding of how things should be and it caused problems it might be better just to let people be who they are when they are if that makes sense.
In my case, you only need ask...but I'm 47 so I know what is what about my feelings.
stupid boys. just kick 'em in the face and forget about them XD lolz
Guys are afraid of the rejection we got in public school where we shared our feeling openly and got burned. He will hide them well until he trusts you to not break his heart. That takes quite a bit, I am afraid.
By show I think you mean communicate, you need to find a way to get him to open up to you can communicate, for starters I would not ask him any tough questions or expect much when he is near other friends or girls, you need to get lover boy alone and have a couple of hours to warm him up.