It can be difficult figuring out the meaning of an ex being jealous.

When you notice that the green-eyed monster has reared it’s ugly head and your former boyfriend is attached to it, you may become surprised and confused. How do you make sense of his jealousy?

The Golden Rules for Jealousy

In order for a guy to be jealous, rule number one is that he has to have a relationship worth losing. If the relationship were completely worthless, then he wouldn’t care. He wouldn’t feel any of the emotions that make up jealousy, which include hurt, anger and fear, as discussed in the 2005 issue of Personal Relationships. Rule number two is that he has to see someone else as a rival who is threatening his relationship with you. Perhaps he thinks that the other guy is more attractive or is enjoying more of your affection. If he’s jealous, then he probably still has some feelings about you or your previous relationship with him.