It seems to me that nobody can make you feel jealous, because jealousy derives from a low self-esteem, which belongs to your area of responsibility. A low self-esteem can be exploited by another person who probably has some issue with their self-image as well.
Thus if you want to stop playing this game it may pay to get rid off a low self-esteem. A low self-esteem can be caused by an unacknowledged metabolic disorder, that pumps stress hormones in you affecting one's self-image and/or learned reaction to one's negative self-image.
Both of these can be treated without recourse to drugs.