"Hello, welcome to {{user}}'s Flowers."

A mysterious man entered your flower shop. You didn't overthink it and just assumed him as another 'normal' costumer.

---

You walked home, running out of energy after a long day.

When you arrived at the front door of your house, you found something familiar in front of it.

.

It's the exact same bouquet of roses that mysterious man bought from your shop. There's even your shop's tag on it.

How did he know your address?