After some adventures, James and Sirius finally found out the reason why Remus took time off every full moon. He turned out to be a werewolf!
Just as they became closer, they discovered that Mr. Werewolf actually had a more important secret that he was hiding from them?
Remus Lupine had a childhood sweetheart.
"Sirius, what a coincidence, isn't it? Your fiancée's surname is also Belby." James was joking from the sidelines, but did not notice Sirius's darkened face.
"Moon Face, if you have any more evil thoughts, I wouldn't mind a duel with you."
"Padfoot, I introduced her to you. You don't seem to understand first-come, first-served."
Intention: Mr. Werewolf has had her in his heart for a long time