Surprise Rose on Valentines day

So, I wake up on valentines day to find a rose sitting on top of my car. How sweet, right? I knowwwww. ^_^ But the problem is, I have no idea who put it there. I don't have a boyfriend, so there isn't n easy answer there, and my two best friends promise it wasn't them! And noooo, it was not my parents. :p I'm going crazy with curiosity! I mean, why would someone do such an incredibly sweet thing for me, and not tell me who did it? Its been a day since the 14th, maybe I should i've it more time? I posted a status on facebook asking who id it, so maybe i'll have an answer soon. or maybe ill never know, who knows!