SasoDei Alphabet!
Y: Yes
Everything was set up perfectly. They had reservations for dinner and, for once, Deidara wasn't running late. Everything was going according to Sasori's plan.
He leant against the doorjamb, waiting on his boyfriend to hurry up so they could leave. He wore a pair of perfectly fitting jeans and a navy sweater. A moment later, Deidara walked out in a pair of equally perfectly fitting jeans, a blue and white striped sweater and a blue scarf wrapped around his neck.
Without a word, Deidara slid his hand into Sasori's, entwining their fingers and headed for the door. They walked quietly to the restaurant, and taking their seats. They ordered dinner and chatted idly about their day. How was work? Are you looking forward to the weekend? Your customer said what?
Their food came and they ate quickly. Deidara yawned as they left, speaking about how he was ready to go home and go to bed.
"Are you staying the night tonight?"
Sasori looked up. The two didn't live together yet. They often stayed at one another's house, but they still each had their own separate residence. Instead of answering Deidara's question, though, Sasori replied, rather unhelpfully, "I don't want to go home yet."
"Huh?"
"Just—follow me. I want to go to the park."
Deidara didn't protest. He was a little confused by Sasori's sudden desire to go to the park—he hated the park more often than not, always complaining about there being too many people—but he didn't let that show. Plus, he had the next day off so he could sleep as long as he felt like. There was no reason to rush Sasori home now.
On the walk to the park, the redhead started up more idly chatter, hoping to hide his level of nervousness. Deidara seemed blissfully oblivious (as always) to what was going on and went on about one of his rude customers and how they dared say that his hair was feminine.
Sasori continued to placate his partner as they walked to their bench. The bench they had met at. The one Sasori had asked Deidara out at four years previously. The one they went to whenever they were celebrating something major. It was only fitting that they would be there tonight.
As soon as their bench came into view, Deidara stopped dead, "What is today? What did I forget? Dinner, our bench. Oh god, I am the worst boyfriend ever. Whatever I forgot—I'm sorry! I'm so sorry!"
Sasori couldn't help but smile as he pulled him along, "You didn't forget anything, calm down. Just come sit down."
They moved together to the bench. Deidara sat down, expecting Sasori to take the seat next to him. Instead, Sasori dropped to one knee in front of him, a black box suddenly appearing in his hand. Immediately, Deidara was covering his mouth with his hand. No way!
"Deidara, darling, we've spent over four years together and you have made me happier than anything else. You know how to cheer me up when I'm sad and how to make me laugh when I'm mad. You know that no matter how mad I get when you put the paint back in the wrong order, I still love you more than anything. It doesn't feel right to sleep in a bed without you there anymore." He paused, meeting Deidara's watery blue eyes, "You know how much I love you. How I would do anything to please you. And I know you would do anything to please me. So now, I ask you, please, please continue to make me happy for the rest of my life. I know only you can. Will you marry me?"
The words had barely passed his lips when Deidara had tackled him to the ground exclaiming, "Yes, yes! For the rest of my life, yes!"