I act like I'm happy when I'm tired, I laugh, fangirl and all that but I just feel an emptiness, something's missing and it's probably either attention or affection

this sucks, I'm bored, then, talking to someone, I get happy and then, a couple seconds later I'm back to my tired look and mood no matter what

I feel like I'm loosing emotions or something ._. even the sadness is slightly gone but replaced by more emptiness