S.H.E.I.L.D. Captain Daisy 'Skye' Johnson had spent the last twenty minutes advising fellow Shield agent Doctor Jemma Simmons on strategy.

Only it wasn't for a mission, or in any other way spy/Shield related. No, it was strategy on what to do with Simmons' husband Doctor Leopold Fitz in their bedroom. And finally Simmons, who was trying to conduct an experiment on her pet cuttlefishes while the younger woman talked nonstop at her, had had enough.

"You know what, Daisy, if you think you know Fitz so well, why don't you just marry him yourself to do all those things with!" she exclaimed in exasperation without thinking, forgetting whom exactly it was that she was talking to.

Daisy shrugged where she was leaning back against the lab bench behind where the biochemist was working. "Okay, sure."

Simmons' head whipped around to stare in shock at the younger woman, before exclaiming, "I wasn't serious!"

"Shouldn't have made the suggestion then, should you have, wife-to-be," Daisy smirked back. "Maybe you'll remember that next time."

"There's not going to be a 'next time', there's not a this time!" Simmons shouted, thankful that her lab had been empty for over an hour and nobody would be wandering in this late. "You're not marrying my husband, you're not having sex with him yourself, and you are going to stop giving me suggestions!"

"Giving you suggestions for what?" came an innocent Scottish voice strolling into the lab, the one person who could be wandering into their lab that late. "Daisy is really smart if it's her area of expertise, or something street smartness related, so it's probably worth listening to her. I mean, I'm pretty sure she's not giving you alien biochem suggestions, even if she is half-alien — blood-wise, anyway."

"It's suggestions on how to make your sex life even better than it already is," Daisy hurriedly answered before Simmons could try saying anything that didn't involve sex. "Is that an area of my expertise in your opinion?"

"I feel like if I say 'yes' you might take it to mean I'm calling you a slut, but if I say 'no' you'll be offended that I don't think you're any good in bed, so I'm just going to be quiet and upset you by not answering at all," Fitz answered as he walked over to lean sideways against the lab bench that Daisy was leaning against just a few feet away from her, so that he could see both beautiful ladies.

Turning to Simmons, Daisy said, "See? He thinks I'm an expert on the matter, and he already said you should listen to me on things I'm an expert on."

"That isn't anything he just said," Simmons retorted with a roll of her eyes, "and I'm still not letting you marry him."

"Oh — Daisy's trying to marry me?" Fitz asked, intrigued by the conversation that they must have been having before he walked in to see what his wife was up to.

"It was your wife's idea, and now she's trying to take it back," Daisy answered before Simmons could have a chance to give her side of the story.

"No take-backs, everyone knows that," Fitz said before he turned directly to his wife, who was rolling her eyes at him for that comment, and he asked her, "So why did you tell Daisy she should marry me, and then take it back?"

"Daisy wouldn't shut up about ideas she had for you and I that extended far beyond the literal bedroom, I should mention, and forgetting whom I was talking to, I accidentally told her in an exasperated moment of thoughtlessness that if she knew you so well, she should just marry you herself so that she could do all her suggestions with you, instead of dragging me into her ever increasing craziness, questionable legality, and outright impossibility. To which Daisy didn't even hesitate in saying okay."

"Sounds like a proposal to me," Fitz said with a shrug as he looked over at Daisy. "Did any of your ideas involve you and her?"

"None of the ones I was telling her did, since I was just helping Jemma out with some friendly suggestions of what you two could do together, or as Jemma prefers you and I do since we're getting married soon to make her happy, but I do have plenty of suggestions for her and I," Daisy answered.

"That's good, so you can marry us, as opposed to just marrying me," Fitz said, before turning back to his already-wife. "That was such a wonderful suggestion you made — knowing Daisy, I know it'll be just as much fun for you as it will be for me."

"I'm getting really tempted to let it happen, and make you two face the life-long consequences of your craziness," Jemma grumbled as she reached into her tank and captured a couple of her chromatophore colour-changing cuttlefish.

"Yes!" two voices emphatically exclaimed at the exact same time, before Fitz and Daisy glanced at each other wondering if their psychic link had already started developing simply from becoming engaged.

Simmons just rolled her eyes for what felt like the hundredth time that evening.

~FSK~

Six months later Daisy married FitzSimmons.

The wedding was even smaller than FitzSimmons' had been in the forest twenty-seven levels below ground under the Lighthouse, this one conducted aboard the Zephyr One out in the middle of space somewhere when they were stranded for a while. LMD Director Coulson officiated again the same as his pre-robot self had officiated FitzSimmons' wedding, letting the three of them each say their vows to the other two, as he freely admitted that he had no idea how he was actually supposed to officiate a bride marrying a married couple. But each of the three of them had prepared their vows to the other two spouses combined, and Daisy cried even more hearing Fitz's vows to her and Simmons, and Simmons' vows to her and Fitz, than she had hearing FitzSimmons' vows to each other a few years before — not that she exactly managed to hold it together all that well when she said her own vows to FitzSimmons either, not that anyone minded or could fault her for it in the least. But all in all it was a beautiful, touching ceremony lighting up the deep, dark, cold recesses of the middle of nowhere space, and thankfully not interrupted by any universe-ending catastrophes, which was as likely as not given their great history of timing.

Everyone on the team had been surprised to say the least when they had first been told about the expanded relationship or else caught Daisy snogging one of the two sometime in the first few months after they got engaged, but then again not all that surprised either that Daisy would end up with her two best friends as unconventional as it was, given how much she had always been close to them since their very first mission all those years ago when they had met Skye for the first time. And FitzSimmons was everyone's favorite and model marriage, so if they thought that it was a good idea to marry their inhuman long-time third-wheel, it must be a good idea.

And while she would deny for the rest of her life that she had been the one to suggest that she and her husband marry Daisy, Simmons was forever grateful that her two best friends were as crazy as they were, and had taken her exasperated exclamation completely serious.