B1 upset and angry because someone that you love seems interested in another person妒忌的；好妒忌的；吃醋的
B2 unhappy and angry because someone has something that you want嫉妒的
Why are you jealous of her? She's no competition!
In a moment of jealous frenzy, she cut the sleeves off all his shirts.
She gets insanely jealous if he so much as looks at another woman.
Her plans to make him jealous backfired on her when he went off with her best friend.
He gets really jealous if his girlfriend strikes up a friendship with another man.
extremely careful in protecting someone or something小心守护的，唯恐失去的