Hey Susana. 100% agree you don't have to make that for him. However, I do think at some point it would be odd for you to not mention it.
For example, if he said "wow, that looks good, can't wait till you decide to make that because I bet it's my new favorite meal!!!", and you didn't say anything back, and then made it without him...that wouldn't look detached, that would look kind of inconsiderate.
Instead maybe you'd need to say something like "shoot, I actually got that for a lunch I'm having with a friend. If its good maybe we should get another one next time we go shopping."
Point is I agree with your ability to run your own show, but careful not to do anything uncharacteristically dismissive on your journey to walk your own path.
Keep going and great job!
Me:38 XW:38 T:11 years M:8 years Kids: S14, D11, D7 BD/Move out day: 6/17/14, D final Dec 15