You were walkin'. Straight-up parambulating.
Not too far ahead of you, a girl was walking too. With a stride in her step and a stack of fliers to her chest, you'd both pass each other and that would surely be that... ...or would it?
Those baby blues of hers held a plan. They flew to you, then the sidewalk, and back to her own fliers multiple times as she traversed the shortening distance before your meeting. As per the script, she catches her foot on some invisible force, and initiates a tumble.
At the crux of the fall, you watched her deliberately send a specific flier soaring into the sky, while the rest of the stack scattered across the pavement with her in tow. And yet, you still caught the paper as it fluttered down towards you, not yet sure of it's particular significance, but stepping up and offering it back to her anyways.
She idly fumbled around for a few of the loosely strewn pages, before realizing that you had already taken the bait. Her gaze flew up to face you, her eyes going wide with well-rehearsed shock as they flickered back down to the offered document, while her cheeks reddened on-command.
"Wha- M-Marriage?! At first sight?! Y-you... You cad!"
Yup. Hook, line, and sinker... This whole plan of hers was a set-up, designed so that you'd get your hands on not a flier, but a marriage certificate.
"I... I do! I do!"