I'm extremely jealous how to stop?

Dear One, Jealousy is a symptom of low self confidence, self esteem, and self acceptance. If you were secure in who you are as a person, maybe you wouldn't get so jealous. In my opinion, your boyfriend hugged her goodbye, and I see nothing wrong with that. Maybe if you gave him more room to be himself, your relationship would be better. It is a good thing that you are recognizing that your jealousy is getting in your way. Take good care.