Jealousy usually comes from fear of losing someone, not from what they are actually doing. A helpful first step is to notice the feeling without judging yourself. Then ask: has this person given me any real reason to worry? Usually the answer is no. Try focusing on building your own confidence outside of dating. Spend time with friends, pick up a hobby you love, and remind yourself that you are valuable with or without this person. When the jealous thought appears, take three slow breaths and shift your attention to something nice in the room. Also, open conversations help more than silence. You can say gently, "I sometimes feel insecure, but I'm working on it." A caring partner will understand. For more practical tools on building trust and calm dating habits, https://wisedate.org/blog/ has many encouraging articles.
Forum