Question by the reader : Alexandra

I had read your book “By the River Piedra I Sat Down and Wept”. I know is a love story, Pillar and her boyfriend will stay together defeating all that was against their love. The thing I don’t understand is what is the meaning of the title .In the book I noticed quotes from the Bible, exactly a psalm, about river Babylon, and the sorrow of the defeated people. Is it a connection to Pillars sadness while she thought she will never be with her lover? Thank you so much, hoping for a reply, if you