This is based off the prompt "AU in which every time a person falls in love, a red line appears on their wrist". They're still in Fifth Harmony and everything so I didn't get completely AU. I'm not sure if anyone else already did this, I haven't seen one but I could have missed it! Anyways let me know what you think. Story not my own I found it on tumblr more than a year ago and couldn't find a link to a working page but all credit to the wonderful author I only made the shitty cover art lol.