Illicit Attraction

Though I knew it was forbidden, I was attracted to him the first time I laid eyes on him.
Era was confused when Henry showed up one day at their apartment. He said her mom invited him to look after her welfare while she was overseas. Era tried to avoid and hate him. However, because of his natural charm, she found herself getting attracted to him even if it was forbidden.
Are they living in sin or is Era's mother hiding secrets from them?