Good for you!!!! I don't think finding serentity means we let people walk all over us and treat us with disrespect. Sounds like the situation has been hostile on his part for awhile, and you finally called him out on it. LOVE that you told him about keeping his side of the street clean!
So you made your feelings clear, and hopefully he gets the message. Go about your day, you've set some boundaries with the neighbor. Now let it go. You have no control over his reaction to what you said (sound familiar?), and there's no reason to let it ruin your day.
I actually think you did a great job.
