Does naruto ever forget Hinata's a girl or is that just in fanfiction?
It's just in fanfiction.
Of course he knows Hinata is a girl.
Naruto is stupid, but not that stupid.
Deidara has not been shown to be in love with anyone within the Naruto/Shippuden series. It is possible that he loved someone at some point, but such is never shown and appears unlikely to ever be shown. There are, however, many fan-made works, such as fanfiction and fanart, in which Deidara is depicted as being in love with someone. yes he loves me. XD, jk. No, he doesn't love anyone in the series.
Answer I don't like these stories. Answer The best fanfiction for Draco and Hermione I've ever read is called "What the Room Requires" and it's written by a professional writer, Alydia Rachkam. IT IS AMAZING. There's also a story trailer on Youtube you can watch if you type the title of the fanfiction in. I'm dead serious; it's amazing, and I don't even LIKE fanfiction.