He wrote that is the youngest son of 4, he lost his job and has some debts to pay, so the only way to get cash was to ask to his mother, with whom he always had a strange relation since his father died and he lived a few years at her place when he was 22. He says she loves sex and doesn't hide it, he knew what he had to do to get money from her when he invited her to go to his flat. She also knew what she wanted from him.