I don't exactly know what you mean by "emotionally involved", but I know that for me, trying to be emotional in my interactions with other people is difficult. I don't have much trouble expressing anger (but I rarely get angry enough to express it), but beyond that I'm sort of at a loss. It's hard for me to explicitly establish an emotional connection with others, by which I mean, to say things like "You mean a lot to me". It's also hard for me to act emotional in front of others, for example I hate crying in front of other people and I basically don't like expressing emotional reactions to something (although to be fair I rarely have extreme emotional reactions to something) in front of other people. Even the very closest friendships I have (and have had in the past) have been pretty much low-key and devoid of emotional expressions of affection/discontent.