"I can’t imagine life without you."
The words seemed to come out of nowhere. The girls were sitting in a booth in one of the muggle diners that Lily had introduced—and subsequently addicted—James to, waiting for Sirius and James to get back from the counter; James had volunteered to go get them food, despite Lily's insistence that one of the waitstaff would come, and Sirius had elected to go with him, because he always found it hilarious when James tried to do muggle things like an over-enthusiastic puppy dog. One second, Marlene had been telling Lily, accompanied by much eye-rolling, affectionately abusive descriptions of Sirius and bouts of laughter, a story involving drunk Sirius, a horse and some firemen, and the next, those words were pouring out of Lily's mouth like she didn't know how to stop them.
Marlene blinked, and looked carefully at Lily. The beautiful redhead looked aghast, but not regretful, and she was trembling. The blonde reached out her hand and placed it on Lily's knee, before sliding closer until she was flush against her best friend, and she wrapped one arm around Lily's shoulders.
"I just—" Lily started, before breaking off, and looking down at her lap. "You're so much, Marley, and you're just—" she gestured helplessly. "You're inextricable from my life, and I can't imagine life when—when you're not in it," Lily choked out, still trembling, and a wave of affection and protectiveness washed over Marlene, provoking her to reach out and just pull Lily even closer, into a proper hug.
Marlene got it—after all, hadn't she and Mary stuck around the longest? Petunia abandoned Lils, Snape fucked up, and James was brilliant for Lils, and so was Sirius, but they were more recent developments, and as much as they loved Lily, Marlene had loved Lily longer and had her back since the day that they met, and she got it.
"Oh, Lil," she said with a sigh, burying her face in the older girl's hair. "Hey—hey," she said, looking stern as she pulled back, peering into Lily's—currently wet—green eyes. "Lily Ev—Potter," she said quietly, in a fierce tone that seemed to resonate through her soul, "you will never have life without me. I've always had your back, haven't I?"
Marlene wasn't thick—she had always felt that she would die first, out of her wolf pack, because she had things and people worth dying for, and they were also the only people worth living for; Lily and James were in love, and married, and they would die for each other, but Marlene would much rather they lived with each other. One of them without the other seemed too cruel. Remus and Mary had endured too much, in their short lives, and she would do anything she could to balance out the scales, to give them a bit longer, a few more chances for happiness. She had faith that they could find it—if anyone deserved happiness, it would be Remus Lupin and Mary Macdonald. Peter, for some reason, wasn't someone she could ever imagine dying—he wasn't as brilliant a wizard as his friends, but maybe that was it; he was humble, and quiet backup, but he wasn't on the front lines, and hopefully that would keep him safe. And Sirius—Marlene closed her eyes, trying to steady her breathing. Marlene could not imagine existing in a world without Sirius; the one thing she could always rely on knowing how to be around, the one person who could read her at a single glance, the boy so full of loyalty and life, the man he'd become, willing to die for any of his loved ones but never been given the chance—and Marlene hoped he never would, though she didn't think this would be the case: Sirius Black had too much bravery and loyalty not to die for someone, and she had no doubt that one day, the world would provide him the opportunity to do so. She understood it—she had the same inclination in her heart—and she knew it would kill him if he couldn't do it when presented with the opportunity, but that didn't mean she had to ever like it—no, Marlene McKinnon could not imagine ever living in a world that didn't have Sirius Black in it.
So in this, Marlene wasn't promising to Lily that they'd live to be the same—hopefully old, but unlikely—age, but she knew that she would always be in Lily's life, just as Lily would always be in hers, as long as she lasted, because they were, as Lily had put it, inextricable from each other's lives. Lily would always have Marlene, in her heart and photos and memories and scrawled upon her soul, if nowhere else in her life, and the same was true for Marlene of Lily.
"I love you, Lils," Marlene promised, kissing her on the forehead. "And some day, you and James are going to have six children, and the first one'll be George—nah, it was Harry, wasn't it?—and then Marlene, and then Minerva, and then Hor—" Marlene teased, reminding Lily of a note from their Hogwarts years.
"No," Lily said, with a teary smile, just like she'd written on the note, and Marlene could have hugged her again just for going along with it. Then Lily looked straight into Marlene's eyes and said, "end of July," in a whisper.
"You said some day," Lily replied. "It's going to be the end of July."
It took Marlene a second to process this. Then—"you're having a baby?" she exclaimed in a breathless, excited whisper. The sound of metal clanging on the floor came from next to them, and they turned to see Sirius, jaw slack, and four sets of cutlery littering the floor around his feet. A few steps behind him, James arrived by his side and shook his head exasperatedly.
"Honestly, Padfoot," he said in amusement. "Such butterfingers." James slid into the seat beside Lily and slung his arm around her in the position that Marlene's had just vacated in her exclamation. "What made him drop his shit, anyway? Marls talking about how shite he is in bed?"
Sirius made a strangled noise. James looked at him in mild alarm, Lily moaned slightly, and Marlene did her level best not to laugh. "I'll go help with the cutlery," she said, and then got up, scooped up the silverware and grabbed Sirius, pulling him over to the bench before she finally started laughing. Next to her, Sirius was mouthing the word baby over and over.
"Chill the fuck out," Marlene said finally, through her giggles. "You'll be the best godfather." As his eyes widened and he stared at her, Marlene giggled again, and glanced at him, then back at James and Lily, who seemed to be having a very stammer-y discussion. She understood what Lily meant. She couldn't imagine life without any of them, either.
(In the end, she supposed, Travers pointing his wand at her as she spat him in the face, it was lucky that she didn't have to experience it. I never got to see Marlene, she thought, sadly and absurdly, as the curse travelled towards her. I would have liked to meet her.)