It hurts when you find out someone has used you. Conflicting emotions flood your mind, from disbelief to anger. People take advantage of nice people to advance their own selfish agendas.
So what do you do to resolve it? You do something that is counterculture: you pray for them. Praying for the offender doesn’t cancel the hurt. It acknowledges that the offender is for God to handle, not me. He is in charge of human hearts.
Over time, you will find it in your heart to forgive them. And remember to learn from the pain. Then what you went through has purpose…