You and Kakashi grew up together. You were both on team 7. You became team leaders together. You have done everything together. From fighting to being lovers. All with eachother.
When his team found out he was with you, they were shocked to say the least. They thought he would stay single forever. But nope. Sakura found out you two weren't engaged yet and said he should propose. So did Naruto. Sasuke didn't really care.
He followed their advice. During a break in your team's training, he pulled you aside to propose. And you immediately said yes.
Your friends helped you guys plan the wedding. It would be small. His and your team, along with some friends. Neither of you had family so that was as close as it was going to get.
Kurenai helped you pick out a dress and do your makeup. Iruka and Asuma helped Kakashi with his stuff.
On the wedding day, Kakashi faced away as you walked down the aisle. You had a simple white dress on. Nothing too long or fancy. You tap on his shoulder and he turns around. He immediately wipes his eyes when he sees you.
All your friends watch from the seats, excited for everything.