Imagine your OTP as children, with Person A shyly giving Person B a flower.
"Flower For You"
"Rango!" A nine year old Jake found himself shouting out as he spotted the seven year old, green haired boy, across the playground. The smaller boy looked up at the sound of his name and he grinned, expression brightening, when he saw the older brown haired boy.
"Jake!" Rango giggled, waving him over to come play, and Jake ran over to him.
The two spent about an hour playing around on the playground, sliding down the slides, swinging in the swings, and chasing each other around.
Eventually the two found themselves sitting in the grass under a tree, in the shade. Rango was trying to catch a butterfly and Jake was laughing at Rango's foolish attempts. "Ah, Jake! Lookie!" Rango suddenly shouted, pointing at a pretty violet colored flower.
Jake blinked, calming his laughter down and he looked at Rango as the other picked the flower, looking at it with awe. "It's pretty..." Jake commented and Rango blushed a little before giving the flower to Jake.
"Here...!" Rango said shyly, looking down at the ground.
Jake blushed, too, and took the flower, slowly breaking into a grin. "Thank ya, Rango!" He chirped, leaning over and kissing Rango's cheek. Rango's blush deepened, but he smiled at this.
"You're welcome!"