or when you have a vagina. Thats a pretty helpful sign as well...
Not as accurate as this way though.
On Tuesday, I looked over and my crush was looking at me. I haven't stopped thinking about it.
You had something on your face.
Or on the internet, does ":3" mean he's happy to see me, or DOES HE THINK HE'S A CAT?
Not just anyone, I'm pretty sure then I'd never have time to think about eating or showering or, you know, life.