Dear one, I understand how you feel, I have been there, but this anger and bitterness is only hurting YOU, it is not hurting them. You say that you know what the Bible says about loving our enemies, but what about the verse that says if you will NOT forgive those who have sinned against you, then I will NOT forgive you {Matthew chapter 6 verse 15}. Forgiveness is a very serious thing to God. This will only hinder your walk with the Lord. The ONLY way {and it will take time to mean this in your heart} is to ask the Lord to love this person through you, there is no way that we can do this on our own if we feel justified in what they have done to us, it has to be done from God. Please do not let this anger take root in your life, the enemy would love for this to happen, then he has a foot in the door with your relationship with God and that is a very dangerous place to be. I pray that you will purpose in your heart today to turn this all over to Almighty God, the ONLY one who can turn this all around for you. Blessings!