I also agree with your position that love for others is the overflow from love for God. We actually cannot in truth love anyone until our hearts are filled with love for God, since that love is actually His love coming through us. The more actual love for God someone has, the more compassion and mercy they have for others, even if the "others" aren't perfect. That love is in connection with God the Father. And, of course, there is Tough Love as well.
People who think there can be real love for the creatures while ignoring or dissing God is experiencing sentiment only, not love based on wisdom. Such sentiment is often very misleading and can take a person very far away from God, since it is exclusive. For instance, a person may "love" their pet cat, and hate their own family. Or the misguided parents who "love" their homosexual children so much that they applaud their sick behavior and participate in "Gay" Pride parades. And such people of course villify those who would actually help their deviant sons and daughters become healed.
What kind of love is that?
Also taught in the Orthodox church.
You and I will find much to share - return soon and let me know you are back!