Those fake friends are liars or hypocrites. They are pretending to be your friend but in their hearts they are not. It would be wise to stop letting them use you. Don't be their friend anymore. 

However, you should be courteous and even “agape” love them. Agape is the Greek word for God's love for sinners. John 3:16 (NKJV), "For God so loved (agape) the world that He gave His only begotten Son, that whoever believes in Him should not perish but have everlasting life.” God’s agape love sent Jesus to die for us!  

Jesus commanded us to love (agape) our enemies. Agape is not a feeling. It is a decision to do good to all – even to those who use you. Matthew 5:44-45 NKJV), “44 But I say to you, love (agape) your enemies, bless those who curse you, do good to those who hate you, and pray for those who spitefully use you and persecute you, 45 that you may be sons of your Father in heaven; for He makes His sun rise on the evil and on the good, and sends rain on the just and on the unjust.”

On the other hand, agape does not search for mean people to bless. We do not look for opportunities to be victims. Essentially, it means, when we are put in unavoidable circumstances where people are hurting us, we do not hurt back. We are kind, even helpful. (See Matthew 5:38-45.)

“Phileo” love is the kind of love we have for our fellow Christians. Romans 12:10 (NKJV), “Be kindly affectionate to one another with brotherly love (phileo)…”  This is a tender, heart-felt love of companionship, friendship. It is the brotherly love that siblings in a family have for each other.