One who has unreliable friends soon comes to ruin, but there is a friend who sticks closer than a brother.
Proverbs 18:24 NIV
*This is a primary example of why you can't let everyone in your circle. Sure, we are called to love, but not called to allow people to ruin us especially when they don't understand, hurt us, or are unequally yoked. Use wisdom when you let people in your life...Not your own wisdom, but God's wisdom. What is He trying to protect you from? If we can trust God for everything else, surely we can learn to trust Him for the right company to keep...You are called to love, but not to suffer.