@someweirdfreak maybe it could be about Neville and Y/N going to the Three Broomsticks for a date. He accidentally spills the Butter beer all over himself so they both start laughing about how clumsy he is. And Neville accidentally tells her, "I love you," while she helps him clean up and she gets all flustered up before saying it back cause that's the first time they have ever actually said it. And then you can maybe write about Neville being cocky about it later