Remus, like everyone else in their sixth year of Hogwarts, or atleast the majority, was focused on his studies more than ever. He set up tutoring sessions with the younger years and spent 75% of his time in the library.
Sure, his friends took the piss of him being the nerd of a group of popular people, but they respected it. Lily threatening to hex them definitely helped. Remus loved his bestfriend in the most platonic way possible.
The only problem? A certain Sirius Orion Black that was his other bestfriend that he loved in ways definitely not platonically. Remus never liked to admit it because it was hopelessly. Sirius was the biggest flirt of Hogwarts, even bigger than James who was confusingly torn between a particular redhead and Sirius's brother.
So, without having anyone to focus on, Sirius's name floated through any population of the school. Remus was someone who like to believe he'd always had a good control on his emotions and yet it frustrated him immediately.
Remus knew he was no good. A 6'3 lanky werewolf with more scars than skin from Abersywith, Wales. How could that compare to anyone in the school? So, instead, Remus forced down the way his heart raced around his bestfriend.
Unfortunately, Sirius Black liked to throw parties for most minimal celebrations. Gryffindor had just won a Quidditch match. Remus planned to stay in the dorm or in the library like normal until Sirius came up to him, asking him personally to be there.
And, oh, who was Remus to deny? So now he was in his worst nightmare. Crowds of people grinding and snogging together in dim lighting and alcohol all around. But Sirius was there and Remus tried to stay calm. "I think you just wanted to torture me, Black."