He is really trying to be genuinely caring and a good guy, but purely psychologically he can't do it, he is afraid of getting too attached, even though he is already completely in love with you.... He was often betrayed in the past, so he is afraid that you are also from such people, so he does not reveal himself and keeps his problems secret. He has no parents or other relatives, he's made it on his own. He's lived in an orphanage all his life.