初恋 Puppy Love / First Love；单恋/暗恋 unrequited love；迷恋:infatuation, 虐恋: sadomasochism, 暗恋:have a crush on, 网恋:Internet love, 热恋:honeymoon phase, 宠恋:doting love, 苦恋:bitter love, 师生恋: teacher-student love, 同性恋:homosexuality, 三角恋: love triangle, 夕阳恋: sunset love, 双性恋:bisexuality, 姐弟恋: toy boy love