Facebook Has Gone To the Gods
Headcannon: When Thor joins social media, he has a ton of pictures from press, various Avengers, and SHIELD databases to choose from, but he digs up the first picture Darcy ever took of him that day at the diner in New Mexico and uses it for all of his profile pictures.
It took many frustrating days, weeks really, for Darcy to teach Thor how to navigate social media. In the end, she only allowed him Twitter, Facebook, and Instagram, everything else was off limits to the technologically inept God of Thunder. Eventually he managed to figure it all out, at least to the extent he no longer asked her for help, and when he finally noticed his profile pictures, he knew how to fix them. The pictures weren't bad, some were quite good having been professionally done, but Thor wanted something more personal. He enlisted the help of his shield-brother the Man of Iron to find the perfect picture. Once Tony knew it was a picture taken by Darcy on their first meeting, and that SHIELD had made her delete it, he was able to retrieve it from cyber-purgatory easily. It was such a Thor thing to do, and mushy to the extreme, that Tony didn't even rag him for it, well not much anyway. He was Tony Stark after all, he had a rep to uphold, but he kept it at a minimum and secretly found it to be a nice sentiment. He would deny it on pain of death, but he instructed JARVIS to record Darcy's reaction when she discovered the change of profile picture.
Darcy noticed it the instant it was made, since she'd set all of her shared social media to ping when Thor did anything on them. Her heart skipped a beat when she saw the familiar picture, and her eyes teared up embarrassingly. She'd thought the picture was lost forever, and had shamelessly mourned it. Here it was though, set as Thor's profile picture on all three of his social media outlets. Somehow the dopey alien had managed to find the most important picture in her world, and had put it up for everyone to see with a status that read; The first picture ever taken of my image was captured, much as my heart was, by my Lady Darcy. Seriously, if she hadn't already agreed to she would have married him for that alone. Thor may be a bumbling fool most of the time when it came to Midgardian ways, but he knew her inside and out. There was nothing bumbling about his love for her, or how he showed it.
"Love, what is the matter?" Thor, the most amazing man she'd ever known, asked with a note of alarmed concern. She hadn't realized that the tears building in her eyes had spilled over. He heart simply overflowing with love for the alien.
"I saw your picture." She whispered, voice choked with emotion.
"Are these tears good tears?" he asked with hope.
"Yes." Darcy threw her arms around his neck and clung to him like a vine. "I love you. I can't believe you did it, Thor, it means so much. You can't know how much it means." She was blubbering like a love-sick bitch and she didn't even care. Thor gripped her tightly, his chest filling with the, familiar to him now, warmth of love for her.
"It is the most precious of images to me, because it was taken by you before I knew how much you would mean to me. It took only days after you captured that image for me to realize that you were everything to me. It is the only picture I would want." And she cried harder, kissing him wetly. Hysterical laughter, and tears of love and joy mingled together. Thor was soon caught up in the joy, kissing her back strongly. It wasn't long before the kiss turned heated, and things progressed rather quickly from there. JARVIS wisely deduced that was his cue to stop the recording, much to Tony's chagrin.
The next day, after a long night spent making love, Darcy changed her profile pictures. When Thor's phone pinged with the notification, his heart burst with emotions mirrored in his widening smile. Darcy had found Tony's recording of her reaction and instead of being pissed had asked JARVIS to upload a still-shot of the moment when Thor looked into her misty eyes before she'd kissed him. Their love was shining bright and beautiful for everyone to see. It became Thor's second favorite photo, and he tagged himself in it so that it would remain on his timeline for years to come. Not even their future wedding photos could outshine the depth of the ones they'd chosen as their profile pictures. Sometimes the little things count the most. A grinning, oblivious alien in a diner in New Mexico with a mouth full of pancakes and coffee, and an embrace between two souls tied irrevocably and inseparably together captured by the people who love them frozen in time.