How about.

Silence

or

"I enjoyed our walk and conversation. It was a good day. I hope you have a good week. Talk to later. Avermont."

It was a walk in the park... You are the one thinking expectations.

Explain to me how you decived him?

If you and I went for a walk in the park and talked. Had a few emails.

You know what I would do.

I would send you a thank you note.

Just like above.

I would smile. And think that I had a good time with avermont. She is an interesting person. Perhaps one day we will have another conversation over coffee or lunch or dinner.

Then that would be that.

Fret the bigstuff aver... not the small stuff....