This trope is not universal. It thrives specifically in collectivist, hierarchical societies like Indonesia, Malaysia, and parts of the Philippines for three reasons:
Romantic initiation rarely occurs organically. It is usually triggered by a transactional or accidental violation of boundaries. Common scenarios include the young man working as a ride-hailing driver (Gojek/Grab) for the Tante, doing odd jobs at her house, or catching her in a moment of vulnerability. The male gaze is established early, but it is a subordinate gaze. The young man is overwhelmed by the Tante’s physical presence, establishing her as the dominant sexual subject. 3gp Sex Tante Vs Anak Kecil