That Friend is Jesus because Jesus was willing to die on the cross for us so He is willing to be our Friend. In John 15:13 it says “Greater love hath no man than this, that a man lay down his life for his friends.” That Man that was willing to lay down His life for His friends was Jesus.
To be a good friend back to Jesus we must love good and godly friends because it says in James 4:4 “Ye adulterers and adulteresses know ye not that friendship with the world is enmity with God. Whoso therefore will be a friend of the world is the enemy of God.”
To keep the right types of friends you should try to be willing to please God not man. You should also treat your body like a temple for God because in First Corinthians 6:19 it says, “What? know ye not that your body is the temple of God and ye are not your own?”
If your friends do not agree with that, it means they are not really your friends.
Caleb Vansickle

