Hi! I write adult short horror on my own website, bloodytwine.com. I have several collections of adult short horror stories already published that you can purchase from various bookstores or from Amazon. So far, these include Bloody Twine #1 - Bloody Twine #5.
I'd publish here on Wattpad, but considering I have graphic scenes of violence and gore in some of my stories, I'm afraid my stories may not be the right fit for this site. Nevertheless, I enjoy reading other people's short horror, which is why I occasionally stop here.