Respuesta :
When you have a crush on a boy and that boy have a girlfriend or when a friend have a beautiful dress and you want to have it. YOU ARE JEALOUS
well in the case to make some people jealous is so random for any person like if youre a boyfriend or a girlfriend yo can feel jealous when you see your whatever talking to another person also if youre a kid and you want a toy of someone else or anyone get the jod you want or the calification