After past relationships have ended in your life, don't be surprised if the one who doubted you and secretly put you down behind your back tries to come back around later down the road. Whether it's an ex from 10 years ago, a fake friend who judges your finances and smiles in your face, or people who make you feel left out...they're still secretly checking on your progress in life. And sometimes, they are doing it through other people, online and offline.
Be thankful for past negative experiences. It sets the stage for the right person and people to come into your life.