(noun) A state of suspicious guarding towards a spouse, lover etc., from fears of infidelity.
"Jealousy is a disease, love is a healthy condition. The immature mind often mistakes one for the other, or assumes that the greater the love, the greater the jealousy - in fact, they are almost incompatible; one emotion hardly leaves room for the other."
"Welcome to the wonderful world of jealousy, he thought. For the price of admission, you get a splitting headache, a nearly irresistable urge to commit murder, and an inferiority complex. Yippee."
"She had loved him for such a long time, she thought. How was it that she did now know him at all?"
"If you find serenity and happiness, some may be jealous. Be happy anyway."
"A little jealousy in a relationship is healthy. It’s always nice to know someone is afraid to lose you."
"When a man is in love, jealous, and just whipped by the Inquisition, he is no longer himself."