Why is "Pre-engagement ring" trending?

Wikipedia Overview

A pre-engagement ring, sometimes referred to as a friendship ring or promise ring, is a ring given as a gift to a romantic partner to signify a commitment to a monogamous relationship, often as a precursor to an engagement ring. A heterosexual couple typically has the man presenting a ring or both exchanging rings, though women may present one as well. They may be worn on any finger due to not being as serious as an engagement ring, though they are sometimes worn on a necklace. These rings are typically purchased by those who are too young to get engaged to their partner or by a partner or partners who do not want to rush into marriage. While similar concepts have been employed in the past, the concept of pre-engagement rings came into prominence starting in the 1970s. It gained further prominence in the late 2000s when celebrities began to use pre-engagement rings such as the Jonas Brothers, Katy Perry, and Selena Gomez.