Who is Mark from Wasted: A Memoir of Anorexia and Bulimia and what is their importance?

Mark is a man who works at the university newspaper with Marya in Minnesota. Although Marya falls in love with Mark, Marya's father does not like Mark. Mark is too old for Marya at the age of twenty-five. He also rides a motorcycle. Mark never says anything about Marya's thinness during their relationship together. When Mark picks Marya up after her trip to Washington, Marya knows he has been sleeping with someone else. Although Mark denies the accusation, they decide to end their relationship. However, while Marya is at her lowest point while at American University, it is Mark she calls for support and comfort.