Good catch.
It is a good quote, but are you
sure he "caught" anything?
The condemnation speaks of love being completely one or the other. Of course this is not true; not in this vale of tears.
Look to eternity. All the loves of this life ARE, finally and irrevocably, resolved into one or the other.
I am NOT saying that what I said was absolutely correct, nor said in the best possible way. However, even those with no knowledge of revelation must, in loving another, desire what is good for the beloved.
The good is, naturally speaking, that which is part of, or leads to, a virtuous life. Such cannot even be correctly grasped without reference, however slight or indirect, to the Supreme Good, even known only by reason. If this is NOT the dominant motivation, then I believe it CAN BE argued that it is an inordinate love of self that is motivating things. In most concrete situations, however, I believe there is a mixture of motivations.
Why not post your own thoughts on this complex matter? I am certain I do not know all there is to know about so deep a matter, nor that I have expressed myself in the best way.
In the end, I think even the best of us love creatures in a rather less-than-perfectly-purified way. That is what this crucible we call life is all about - learning and being purified as we travel toward our true home. Godspeed.