Does he realize that it bothers you that he did these things without discussing it with you?
Did he deliberately avoid discussing it with you or is he just used to doing his own thing?

Don't answer those here, but answer them for yourself. If your independance mostly works for you then that's the important thing, regardless of whether or not the rest of us think it would work for ourselves. From what I've seen of you on here you're pretty independant too. It wouldn't surprise me if there are things you've done without discussing them with him. I don't think either of you would want to end up feeling like you need the other's permission.