Alright so something weird that I wanted some opinions about

So about a year ago maybe I got food from Buffalo Wild Wings and saved the receipt in my wallet just in case. Eventually I forgot about it for several months and by then it had almost completely rubbed off but I noticed something odd something I had never noticed from this location or any of the other employees before. On my receipt was a thank you written in pen with a heart next to it. So I decided I won’t throw it out yet. Eventually I forgot again until the other day when I was cleaning my wallet out because it had gotten overstuffed with junk. So now I’m just wondering did the waitress have a crush on me or something because I’ve never seen anyone else put a heart on it before?