We all know how powerful of a motivator jealousy is. It can help someone see just what they're missing. Here's exactly how to make your ex jealous. According to experts, when you are trying to make your ex jealous, it gets very complicated fast. You need to first start by showing him and the. liqt.info -- 3 Ways To Make Your Ex Jealous. Why would you want to make your ex jealous? Jealousy is painful, and can.