Firsts

The Accident
Their first kiss was an accident. They'd been walking side by side along an abandoned corridor, noses stuck in their respective books when Lily tripped. She grabbed Severus' arm to steady herself bringing him down with her. After much rolling around, Severus somehow ended up on top of Lily.
"Are you alright?" he asked worriedly.
She seemed vaguely annoyed as she answered. "Yes, yes, I'm just fine."
Severus sighed with relief.
Now that the shock and worry were gone he was suddenly intensely aware of their unintentionally intimate position. His gaze wandered from Lily's eyes to her lips and he leaned down and she moved up and their lips connected accidentally on purpose. Both froze, eyes wide, breaths held, hearts thudding loudly.
Then Severus wrenched himself away, jumping to his feet. His cheeks burned bright red and he didn't meet Lily's eyes once as he helped her get up and collect her things. In his embarrassment he didn't even notice her equally shining red cheeks.
They didn't speak until they had to part for dinner and then it was only a murmured 'Bye' and a hasty retreat to their house tables.
The Accident wasn't spoken of for several years.

Questions
After avoiding each other for one week and another three weeks spent in awkwardness, Lily finally couldn't stand it anymore.
She and Severus were studying in the library because it was one of the few things they did together that didn't require conversation or any other interaction and was therefore less likely to result in unbearable awkwardness. Besides, the library was one of the places in the castle James Potter and Sirius Black didn't usually visit (unless Remus Lupin made them which didn't happen often).
That particular day was Friday before a Hogsmeade weekend.
Lily watched Severus brood over some potions notes, all the while pretending she didn't exist. After staring intently at him for about half an hour she closed the book in front of her with a loud thump. Severus jumped and whipped his head up only to drop it again when he accidentally met Lily's eyes.
She sighed in exasperation.
"Will you go to Hogsmeade with me tomorrow?"
The question surprised Severus enough to forget that he was avoiding her eyes. "We always go to Hogsmeade together, Lily. Why would you ask now?"
Lily stifled another sigh of exasperation. "I meant; would you like to go to Hogsmeade with me on a date tomorrow?" She considered the way his jaw dropped and his eyes went wide, extremely satisfying revenge for laughing at her after his declaration of love.
After staring at her blankly for a full minute Severus snapped his jaw shut and shook his head violently. Disappointed, she gathered her things and made to leave when his voice stopped her (once again). "Sure, of course, I'd love to go on a date with you." Lily very nearly sighed again, this time with relief and grinned brightly. The surprise on Severus' face slowly morphed into an answering grin.
Hurdle overcome.
And then they noticed the time.

Dear Diary
This weekend was a Hogsmeade weekend and Sev and I had our very first date!
On Saturday we both went Christmas shopping on our own though. Sev's present was really hard to find so I left him for last. I wandered around for almost an hour before I found this tiny little store beside Madam Puddyfoot's. The place was filled to the bursting with more or less useless plunder but there was a really beautiful bracelet. It is silver with two black snakes whose tails are entwined and their heads are curled around a red flower.
Anyway, our date: we Sunday morning walking around the village and sort of window shopping. Then we had lunch in the 'Three Broomsticks'. We went back to the castle early because Sev said he had a surprise for me. I was so confused when he walked me to the Gryffindor common room but the Fat Lady opened without a password and she winked at Sev. Of course, I understood the moment we got inside. The armchairs and all the sofas except for one were pushed away from the fireplace and there was a tiny table in front of the sofa. On the table was a vase with three roses, one yellow, one red and one white. Beside the vase was an extra-large box of my favourite chocolate. I nearly kissed Sev but I didn't quite dare. Still, this is officially the best day of my life.
Lovingly,
Lily

Telling Him
The first time Lily said 'I love you' was not an accident. In fact, it was planned down to the last detail. She worried about how and when and where to tell him for nearly a whole month. As it so happened, one of her dorm mates gave her the idea. Lily had decided to stay at Hogwarts that year and her parents, after they got over their initial disappointment, decided to go on a second Honeymoon somewhere warm and sunny.
Lily and Joanne had been talking about Christmas presents when Joanne mentioned that her brother planned to propose to his girlfriend on Christmas. Apparently, the engagement ring was supposed to be the girlfriend's Christmas present. It seemed so obvious all of a sudden. Granted, Lily didn't intend to ask Severus to marry her (not yet, anyway) but she had the bracelet and she had 'I love you'.
It wasn't difficult to persuade Severus to meet her after curfew on Christmas Eve, the difficult part was setting things up exactly the way she wanted them to be.
She ran into the first problem with the tree. The tree was necessary since she wanted to celebrate Christmas with her boyfriend (she thrilled at the word) and that wasn't going to work without a tree. When she finally got an appropriate tree into an unused classroom and had everything decorated, she realized that she would have trouble playing the music she wanted. All her records were at home in her room and she didn't have anything to play them with anyways.
Fortunately, Professor Dumbledore seemed to be aware of her plans and he implied that he approved as long as they weren't caught. He even lent her small device that would play romantic Christmas music when Lily tapped it with her wand. She tried very hard (and failed) not to notice the twinkle in his eyes.
Finally, she had everything ready and perfect before the bid day arrived. From the moment she woke up that morning she kept going over everything she'd prepared, trying to find a flaw, until Sirius Black decided to drive her crazy by trying to make mistletoes follow her. For revenge, she charmed them to follow him instead which had him grinning. At least until the branches began hitting him. Annoyed as she was, Lily had to admit that Sirius had managed to distract her.
From then on everything went perfect. Lily and Severus began their evening with cookies and silliness. The mood shifted slowly and by the time they were ready to open the presents, Lily's cheeks were flushed and she was almost sure Severus' were too.
The present he handed her was wrapped in red and green, and it felt like a box. The box turned out to be filled with photographs of her and Severus. Some of them even moved.
Lily's vision was a bit blurred when she held out the little silver box with the bracelet. Severus took it and she said with a smile, "I love you, Severus." He threw his arms around her but before his lips could touch hers the door opened and a stern voice, filled with anger, stopped them. "Mr. Snape, Miss Evans. I thought you of all people would know not to be out of bed after curfew." It had to McGonagall that walked in on them.
"I'm sorry, Professor. We just wanted to celebrate in private." McGonagall's glare softened a tiny little bit, but they still received detention.