It's tied with a thread, so when you smile, your philtrum doesn't move and sticks out, and all I can do is cry. I'm going to go to the hospital tomorrow and ask them to remove the thread. It's a melting thread, but classes start next month, and I can't live with such an unnatural mouth shape. I used to hear that I'm pretty when I smile, but now I smile even when I see it. I can't even tell if I'm erasing it, and wrinkles are forming on my nasolabial fold, it's so serious.