[header] How to keep jealousy from ruining a relationship [title] Identify the emotions behind your jealousy. [step] Jealousy usually stems from other emotions. Often, it comes from feelings of insecurity. 
You feel like you're not enough for your partner, so you get jealous when your partner has an interaction with someone else. Whether or not that's the case for you, you still need to identify the emotions behind your jealousy.