A few days ago I was called for a spontaneous one on one meeting with my highest tier boss. I had only spoken to him once during my time working there. I perceive him as a very friendly person.
As he had received a lot of praise about me from my manager, he presented me with a raise, for which I thanked him. He then asked me if I was satisfied with everything (the raise as well as my working conditions), which I confirmed. I then thanked him again, smiled, shook his hand and left his office.
I assumed this was the appropriate professional reaction.
A few days later I was talking to my manager, who told me that the boss had mentioned to him that during our talk I seemed 'indifferent'. He was not sure if I was happy about the raise, as it seems he had expected some reactions of joy.
I am unable to feel strong emotions such as joy or anger among others, but I do not feel well faking emotions, since I value honesty and believe most people would pick up the fakeness and react negatively.
I feel like I should apologize to the boss, but I am not sure if this is the right approach and which point I should apologize for.
Should I apologize for being perceived as indifferent? E.g:
'Hey Boss, I want to apologize if I seemed a bit indifferent the other day. I am very thankful for the raise.'
Should I apologize for being indifferent / not having strong emotions? E.g:
'Hey Boss, I want to apologize if I am reacting a bit too collected sometimes. I just wanted to show my gratitude again for the praise and the raise.'
Should I just thank him again, without mentioning the indifference issue? E.g:
'Hey Boss, I just wanted to thank you again for the raise.' - Would this seem weird and 'out of the blue'?
Should I just let it slide and not mention it again?