Love motivated by the sin of pride, therefore false love. Making oneself most important, rather than God.
Intellectual pride is one of the worst and most self-defeating forms.
The imagination fantasizes about the temptation. If Reason does not resist this fantasizing, and if Reason in fact gives intellectual assent to the temptation, sin has occurred. Thus the reaction of Reason to the temptation is the crucial step in the process of sin. E.g., intelligence is one of God's greatest gifts, but to misuse that intelligence is also one of the greatest abuses one can commit. Sin is the product of a failure of Reason.