I may unconsciously or inadvertently behave impolitely. Or do not fit you in that day. I must apologize to you and your wife, but you know, I'm excited and shaking in a conversation with you that day.
I may not be aware of it, or accidentally made a rude or inappropriate for you on that date. I have to apologize to you and your wife, but I was wobbly, and ru. In a discussion with you on the day.
I may not know, or don't forget to do the polite or not suitable for you in the day that I have to apologize to you and your wife. But since learned that I am very excited and trembling in the conversation with you on the day.