ergh, im really contemplating to comment because i totally forgot the term.
you see, there's this image published in the newspaper on the 70s, the image is about "what if cows is the one who designed farming equipment" i really forgot the title. but on that image it showed that the cow standing in front of a table with 4 kind of unknown equipment.
one of it is obviously a rake, but the other 3 is totally unknown in whether the purposes or how to holding it.
what was that about? it's about the one who saw that image back then start debating and assuming, on the meaning behind those equipment design and how the cow using it. it's kind of raging at the time and make you amazed how far human imagination could be. until many years later the one who draw that image finally confess: he just made the other equipment he draw as a random doodling without any meaning, but the one who saw it interpret it as something else but the theory is so interesting so he didn't say anything about it.
what does it have to do with romance you talking about? the methods.
if you didn't like romance and have no interest of writing it. then don't. JK rowling is a popular author. reader demands the romance at her story so she wrote it at her novels due to the reader demands, the result is: very hazardous.
just wrote the situation when two chara are together while you giving a very subtle hint on how close they are. just imagine the timeframe and purposely make some of them to have some cavity on it. that way the reader would be have no choice to fill the gap themselves with their imagination. so when the reader told you about their theory about what happened between some character, all you need to do is nods sagely, praising their theory, then walk away as if the amazing theory itself is actually happened.