OK, my thoughts are, first of all, don't write " I did nearly blow everything though." Huh, how did YOU blow anything? It was a dynamic between two people. He had his fault in how the discussion was handled and you had yours. Yet, I don't see how saying what you said was that horrible. You asked a simple question and he got all cranky over it. Now, he probably felt that as the man it's his job to make sure this is repaired and that your inquiry was calling his adequacy into question or questioning the way he was handling it. That would be a topic for discussion later. You should discuss what happened and maybe say "Is there a way you would have preferred me to have asked that question?" ...even just for for future reference. Ask if he felt you were criticizing him. Anyway, a small pissy interaction between the two of you is not almost blowing everything. Don't blow things way, way out of proportion! Catch yourself, you do it often.