This is by H28 on onedirectionfanfiction.com it's wonderful and I hope you like it as much as me. Recommended for 17+

Louis Tomlinson has tried so hard to not be who he really is. He has worked for years to not be a person that people don't accept. The walls he built are slowly torn down by a tall boy with green eyes. Add Louis, Harry Styles, a pride parade, and a kiss together, and there's a story full of love and someone learning that it's okay to love boys because love is love, right? (Louis is a painter who hides his sexuality. Harry is a wedding photographer who embraces his gay pride. Liam and Zayn most certainly have a thing going on, and Niall is content just trying to open a restaurant.) Cover by @stiles24stilinskiXD