First of all, well done for being super honest about your feeling! Not everyone has the courage to admit this kind of jealousy. Secondly, it is absolutely normal. It’s called being human. I’m sure other people have these moments too. They are just not as honest as you. I would say that it’s best to just accept the emotion and then let it go gracefully. One thing you can try is write the feeling and emotion in a piece of paper and then burn it to ashes.
Thank you for sharing your feeling!