Harmless jealousy is a good thing. For me, it strives me to aim higher and be better. I am always jealous of guys who I go out with, and with them ending up kissing girls and going home with them. I think it is a healthy jealousy though. I am jealous of guys like Jaz but it never stops me from going out with him. Although he is younger than me, I look up to him and try to emulate him. Use the jealousy to your advantage like most things in life.