Love has two forms:

Mature love is the choice to remain in a relationship with a clear-eyed awareness of reality. It is grounded in self-respect, does not come at the cost of self-sacrifice, and encompasses responsibility, boundaries, and long-term commitment. It is not sustained by emotional impulses, but by ongoing understanding, choice, and action to stabilize the relationship.

Irrational love is an attachment dominated by intense emotions and fantasies. It easily leads one to equate "the other person = the source of self-worth," gradually eroding boundaries and the ability to judge for oneself. It replaces reason with emotion, lets the relationship engulf the self, and drives choices that exceed one's own capacity to bear.