The nature of the “aesthetic” man, and the nature of the “seduction” in this diary are well explained by a couple of quotations. The seducer is predatory,:her weakness is the opening for his action, “When a young girl is emotionally disturb, one an successfully venture much which would otherwise be ill-advised.”  The erotic here has no true love for her — only for the sensation which the other person produces.

The bare desire for sensation is further underscored in this section,

Social intercourse, it is true, brings one into contact with the fair sex, but there is no artistry in beginning an affair in such surroundings. In society every girl is armed, the occasion is poor and encountered repeatedly, she gets no sensuous thrill. On the street she is on the open sea, everything acts more strongly around her, everything seems more mysterious. I would give a hundred dollars for a small from a girl I met on the street, not ten dollars for a pressure of a hand at a party; that is an entirely different kind of currency.

As one considers this diary, we see that this seduction amounts to almost all of what we call “love”. Love consists in what another person makes me feel. We remain in love as long as that palpable emotion persists. What we love then is our sensation — not the other human being. When I spoke with a behaviorist psychologist, she explained that what we love about another human being are the pleasurable sensations produced in our nervous system — and that loss was the sensation of the loss of those sensations.

1 Corinthians 13:4–7 (ESV)

⁴ Love is patient and kind; love does not envy or boast; it is not arrogant ⁵ or rude. It does not insist on its own way; it is not irritable or resentful; ⁶ it does not rejoice at wrongdoing, but rejoices with the truth. ⁷ Love bears all things, believes all things, hopes all things, endures all things.