Queerplatonic Adjective describing a relationship which is more intense and intimate than is considered common or normal for a "friendship", but doesn't fit the traditional sexual-romantic couple model. It is characterized by a strong bond, love, and emotional commitment, yet is not perceived by those involved as "romantic". The relationship may or may not have some elements or degree of sexuality/eroticism at various times, or none - it doesn't matter, because sexuality/sexual exclusivity is not what the relationship is organized around. It's defined by the intensity and significance of the emotional connection.
The people involved do not have to identify as "queer", it's a type of relationship experienced by and available to anybody regardless of their sexual orientation,romantic orientation, or (non-)monogamy. The people involved in a queerplatonic relationship may consider themselves partners, life-partners, a couple, a triad, or any other term that implies the relationship is meaningful, committed and intimate.
Quuerplatonic parters or QPs are sometimes referred to as "zucchini". As in, "he's my zucchini". This was originally a joke within the asexual/aromantic community, underscoring the lack of words in mainstream relationship discourse to signify meaningful relationships that do not follow the standard and expected sexual/romantic norms, and frustration with the erasure of other kinds of intimacy, which were perceived as equally valuable to the sexual/romantic model.
Spectra-Fidelis described queerplatonic relationships thus:
"Ifyou'd picture romance with taper candles over dinner, and sexual
relationship as a queen bed, I would try picturing the queerplatonic as string lights over tea and a bunk bed with tin can-and-wire phones between them. The same, but not."