God's Heart is the Wellspring of Love.
God is the source of love, as God is love. The unconditional love of a Mother is probably the closest to God's love for us and allows us to have a glimpse of how God loves us. If a Mother's love is only a glimmer, then just think how much God loves and cares for us. He is where love originates. Love flows from His heart.
So in loving others, we are and remain connected to God.
"This is My commandment, that you love one another as I have loved you."