(noun): the emotion one feels when another person hooks up with one's girlfriend, or when another person hooks up with a woman one desires for oneself.
(adj.): experiencing the emotion one feels when another person hooks up with one's girlfriend, or when another person hooks up with a woman one desires for oneself.
(adv.): One being jealous of sexual act, whether it be Leonardo kissing Kate in the Titanic or your best friendshooking up with the hottest guy in school.