Hi, I'd like to help you with your question.
It sounds like this relationship is a little suspicious. It is very odd that he controls your relationship to the point of not allowing you to meet his family, withholding his verbal expression of his feelings, and seems to also control the communication level you have with each other.
You stated that there is no one else involved in this man's life. But all of the indicators are there. It is very typical that a man who is cheating does not allow his girlfriend to meet his family. It also would explain his tight control on how much he sees you. But if you are sure there is no one else, then this sounds like an issue of personal control for him.
Even if the control problem is caused by his childhood and family issues, he is letting it affect your relationship. He should take responsibility for how this affecting you and the relationship and he is not. He is allowing this to interfere in how you feel and how you both interact. It's causing problems now and will continue to cause problems unless he addresses it.
Solving this problem depends on how you want to proceed. You have several options.
One, you can accept how he is. This will be the hardest route for you. You will have to be ok with his control of the relationship. He will call the shots and you will need to accept it. But for some people, this works.
Two, you can talk with him about it. Tell him you find the control problem hurts you and that you want to work it out. Use "I" statements. Do not accuse or blame. As long as you keep your voice and tone neutral and caring, he should be ok with listening to you. He may not agree, but he should stay calm about it. Suggest you both talk about what works for the relationship and come to an agreement about changing the situation to give you more say so in how you both interact.
Three, you can suggest he talk with a therapist about his inability to express himself. Again, explain how you feel in a non threatening manner and tell him you want your relationship to work, but you need more expression of emotions once in a while. Let him know you want the relationship to grow but this problem is interfering.
Four, you can end the relationship. This would be a hard choice, but it is an option.
Either way, keep in mind that if this issue bothers you now, it is not going to get better with time unless he sees there is a problem and willingly addresses it. Be supportive but firm with him about fixing this issue. You deserve a good relationship just like he does.
I hope this helps you,