The best revenge is happiness, because nothing drives people more crazy than seeing someone actually having a good life.
Don't worrying about if your ex or an ex friend is jealous of where you are in your life now, and if they are happy or hurt, or whatever, because when you do this you take away from what you have going on in your life now. Keep things as they are, and get a vision for where you want to go with the people in your life. Never get stuck in the past and people that you used to know, or people that you used to belong to.
