Nostalgia: A bittersweet emotion that combines feelings of longing for the past with a sense of warmth and affection for memories. It often evokes both happiness and sadness **simultaneously**.


Ambivalence: The experience of having mixed feelings or contradictory ideas about something or someone. This can lead to confusion and internal conflict, as one may feel both positive and negative emotions **at the same time**.


Guilt: A complex emotion that arises when one feels responsible for a perceived wrongdoing or failure. It can involve feelings of regret, shame, and self-blame, often leading to a desire for atonement or **change**.


Jealousy: A multifaceted emotion that encompasses feelings of insecurity, fear, and resentment, often in response to perceived threats to a valued relationship or possession. It can lead to both **protective instincts and destructive behaviors**.

(Elf)