i think i'm going to agree with Oz on this. I mean, you do say that 'your Master doesn't want you to lose your fiery touch' and I'm guessing that he wouldn't be 'embarassed' to let you know if he was displeased. However, only if you feel like for some X reason he wouldn't tell you, then you ought to bring it up for both your sakes.
And yup, communication being the key, i've had similar feelings, which, for me at least, are a sign that i need a tighter reign, be reminded of my place, if you will.
But yeh, whatever works for the both of you is probably the best way to move from here!

Best of luck xx