like with hes adhd and learning disabilities but i can tell him all mines i wanna know him better and learn from him and he learns from me i just don't get how hard is to open up to hes girlfriend

Each person has a different approach to how they tackle problems. Some want to talk about, others want to stew in private. One is not better than the other. And it's unfair to expect him to change your style, just like how it would be unfair to expect you to change to his style.

What you want to do is to pay attention to how he deals with his problems. If he's moody and unpleasant, and then takes it out on you that's not right. If he's carrying around his problems forever, and then takes it out on you at inappropriate times that's not fair to you either.

Earn the right to be his confidant. Listen to him without saying anything. Hold your opinons and judgements to yourself, and maybe he'll start to see you as a safe place to open up and reveal more things to you.

i also found he has some autism and bi polar and alcohol post syndrome and adhd and im glad that he opened up to me though

Men tend to converse emotions less than women for a variety of reasons - not all men are the same I would in no way say that at all . Over all it is considered socially more acceptable for women to openly discuss their problems than it is for guys -this often begins early in childhood Many guys are taught that "big boys don't cry" where as little girls are often told to "tell daddy all about it" - this translates to his definition of social expectations in being able to "handle" his problems on his own making opening up about them more difficult - be patent with him and accept him as he is just as you want him to accept you as you are.