Suggestion: "A mistake for you, of course. I’ve already told you. But, it’s your decision- not mine. I forgot my jacket. I’ll be by this afternoon to get it." should read better," A mistake for you, of course. I’ve already told you. But, it’s your decision- not mine. Oh, by the way, I forgot my jacket. I’ll be by this afternoon to get it."; it'll give a little humor.