I feel like this when I'm approaching/in the midst of burnout. I just don't have the spoons to "read" people or show much emotion myself.

I go through this too. Not actually sure when or why mine pops up but I feel like that most of the time now. Like I'll know I'm happy but sometimes i dont feel it. Like it's routine & going through the motions. Not fresh if that makes sense

Sometimes it's very complicated for me because emotions are something I feel strongly

It sounds like you're describing Alexithymia, which I've heard a Clinical Psychologist who has extensive experience with autism talk about. He said it is a commonly occurring sub-clinical trait/condition alongside autism (and other disorders) and it translates as "a lack of emotional awareness or, more specifically, difficulty in identifying and describing feelings" (ie. having no words for emotions).

🙏🏻for you. That sounds like it’s very difficult to deal with.

I get like this when I am really depressed. I have used bottling up my emotions as a coping mechanism from a young age. I still do it when things are too much or when I just no longer have the energy to be emotional. People think I am cold and that I don't feel things but that's not true. It's just sometimes too exhausting to let other people see it.