I borrowed a spare jacket on Volcan Baru and now we swap books

I was halfway up Volcan Baru on a Saturday afternoon when I got cold and turned around, and a woman coming down said, wait, I have a second jacket. She lent me a wool one and we walked down together comparing blisters, her three to my five. She lives in Palmira, two streets from me. We swap books on the first Sunday of every month. I still have the jacket. I think she knows. I think she is waiting to see how long I will keep it. I am enjoying the suspense.