Love does not rejoice in unrighteousness, but in truth. If you're showing true agape love, you will bear any sin committed against you. You will continue to hope for restoration and relationship. You will endure any amount of hardship. That's not agape love.
Love never fails.
Let's Love Love is God's command for the church. The common denominator here is not just loving the lovely, but also loving those who seem to be unlovable. And it will outlast them all. Now I know that there is controversy surrounding that interpretation. In tracing that teaching back, you will find that it did not exist before the early 1900's.