First time: Sexual experience: 18 year old guy gets sex education from stepmother

An 18-year-old guy is training, and his stepmom massages his upper body, most especially his chest while wearing kind of wet clothes, and the young man develops an erection. At this, he feels pleasure for the first time as she fondles his nipples before producing what he knows as ejaculation. His stepmom belly is on layer of spunk signifying new phase that he is entering sexually.