Generally, this awareness is brief; it's used for a joke or two and then never mentioned again.Used this way, it's Lampshade Hanging as applied to Paratext. Compare with other metafictional devices, particularly Painting the Medium, which uses Paratext and artifacts to tell the story, and Reading Ahead in the Script which is exactly what it sounds like.It was, to say the least, an unusual arrangement, but Naomi's mother apparently saw Sim as a route out of poverty, and happily acquiesced.Sim's fascination with the young did not end there.'And over time,this developed into an " understanding".' That understanding saw the couple marry when Naomi was 18.
Cut to studio: with increasing panic they run to the second door.
'Well normally, yes' Sonic agreed, 'but at the moment we're characters in a book.
Look, this talk is all getting very complicated, and we've got a real problem to deal with here.' Several members run to window and look out. Cut to studio: the members run to a door and open it.
Sometimes a fourth person is brought in to make it right, sometimes somebody might be kicked out.
See Triang Relations for all the ways these three people can mess up their love lives. Sometimes a Love Triangle can come to involve a fourth person, while still ultimately being called a "triangle." But move complications that insist on widening it can be explored further in a Love Dodecahedron. I didn't have any particular reason for it, other than to surprise readers.