When Fred and George Weasley realize they have fallen for the same girl
The “Jinx” synchronicity: They both came to it at the same time, sitting at dinner in the Great Hall. They both turned, saw the same girl at the same time, saw the look on each other's faces, and stopped dead mid-sentence as the realization hit them like a Bludger.
The Silent Agreement: They didn't argue. They had a silent, telepathic standoff in the common room that lasted a full ten minutes, until they both sighed together and decided, "May the best twin win."
Comparison Game: For three days they secretly compared notes on what they knew about her, only to learn they knew precisely the same obscure facts, her favorite flavor of Bertie Bott’s, say, or her least favorite professor.
Sabotage Etiquette: There is an unspoken rule of etiquette that they follow strictly. They may hide each other’s robes or lace each other’s sock with itching powder, but they must never directly insult each other to the girl. It is an even competition of charming the girl.
The “Tag Team” Method: Most times, they end up sabotaging themselves because one of them attempts to win her over, and the other comes in with humor, only for them to find out they have ended up laughing her off completely because of their actions.
Double Dater Confusion: They often “accidently” ask the girl to join them to visit Hogsmeade on dates, but it usually ends up in a way that makes her think she’s meeting one, but ends up meeting both, not knowing they were planning the whole thing while competing for her heart.
The War of Gifts: Soon enough, they started competing with one another through their joke shop creations. While Fred gives her a singing flower that responds when touched, George immediately finds himself in his workshop by midnight creating a color-changing necklace depending on her mood.
Shared Secret: It’s impossible for the two brothers to hide anything from each other since they’re twins. They have reached a stage of such aggressiveness that they start evaluating each other’s actions much like how sport commentators do. “Seriously, Freddie, that line sucked. You could’ve done way better than that.”
The Wingman Dilemma: Sometimes they end up acting like wingmen for each other. If one says some witty remark to win the girl’s heart, the other will come in to complete the thought in such perfect timing that both of them charm the girl away. They despise their cooperation at these moments.
Secret Alliance: Should there be an attempt of wooing her by someone else outside the brotherly duo (such as the Slytherin or a rival suitor), then the war between the two stops instantly, and together they work towards sending the third party away, after which the war resumes again.
Heartbreaking Awareness: They know what the other one feels at all times. For instance, whenever she finds the joke that Fred cracked funny, George gets jealous, but on the other hand, he gets proud of his brother. This brotherly duo is the best supporter but the toughest opponent for each other.
Imitation: The twins have observed that while in her company, they tend to imitate each other's body gestures more than they normally would, making her uncomfortable.
Late Night Discussions: The pair spends a lot of time awake in their dorms discussing what they love about her. They have realized that they love the same thing about her, which increases the inevitability of their situation.
Pooling Resources: At some point, they had to start sharing their money to get her gifts, explaining that "efficiency" was the reason, but the real reason behind this is that both of them are afraid of giving something that she might love more than what the other has.
Ultimate Sacrifice: Both have already agreed with each other that in case she chooses one of them, then the other would silently back off in order to preserve their brotherhood, despite the fact that it is very difficult for them.
