Friendship Evangelism as it is most often practiced, is neither friendship nor evangelism. Far too often it's more about the believer than it's about Jesus Christ. What happens to the "friend" if they die in their sins before you decide the time is right to share the gospel with them?
Waiting for an unbeliever to give you permission to share the gospel, which Jesus Christ has already commanded you to do, is asking a criminal (a violator of God's Moral Law) if you can obey The Lord and Savior, which is blasphemy against God Almighty.
It's time to end this tool of Satan which has deceived many unwitting Christians and become another man made tradition of Modern American Evangelicalism.
You can listen to the sermon here: Slaying Friendship Evangelism