Yes, there are some. You can start by looking on popular fanfiction websites like Fanfiction.net or Archive of Our Own. Just search for the specific pairing in their search bars.
There might be. However, since Harry Potter and Rosalie Hale are from different fictional universes, such fanfictions can be quite rare. But some creative authors might have combined these two worlds in interesting ways. You could also try reaching out to fanfiction communities on social media platforms to ask for recommendations.
There are likely to be some. It really depends on your taste though. Some might focus more on the development of their relationship, while others could be more action - packed with elements from both the Harry Potter and Twilight (where Rosalie Hale is from) universes. When looking for them, make sure to read the summaries and reviews to find ones that suit you.
Chapter 204, "Homecoming, Unease, and Birds", is the clearest early answer because it turns Deputy Director's situation into a concrete plot event. A useful checkpoint is the way the scene starts with At most, only about a thousand Earth-digging Realm cultivators. and follows through with An iron ore the size of a fist weighed forty or fifty pounds, but....
Chapter 198, "Clearing Meridians, Breakthrough Imminent (Part 2)", is the clearest early answer because Jing Valley finally turns buildup into a real advancement. The setup is Regarding cultivation, it doesn't allow him any carelessness., but the pressure keeps building through So, I need to find an opportunity to go out and learn about the....
Chapter 199, "Good News Keeps Coming for the Hong Gang Family (Part 3)", is the clearest early answer because it turns Hong Gang's situation into a concrete plot event. A useful checkpoint is the way the scene starts with But the reality is not like that at all. and follows through with Waiting for the camp to have a new Cold Resistance Level....
Chapter 210, "Hong Yu, Beehive, Observation", is the clearest early answer because it turns Brother Luo's situation into a concrete plot event. The chapter gives readers a real answer by opening on Hearing Xia Hong's answer, Luo Ming immediately showed a smile on his... and ending on Luo Ming's curiosity about Great Xia's current state is more due to....
Chapter 142, "%, The Boiling Brought by the Martial Arts Training Ground 【8000 Major Chapter Appeal for Subscription】", is the clearest early answer because it turns Xia Hong's situation into a concrete plot event. Early on, Everyone was holding their breath, waiting for him to break through.. By the end, When the light dissipated, the ground had turned black and was.... Inside the broader technology upgrade storyline, the chapter closes with Heavy consumption; usable by only one person;
Chapter 244, "Hunted Down, Strength, and Rescue", is the clearest early answer because it turns Xia Hong's situation into a concrete plot event. The chapter turns that into something concrete by moving from The Long Mountain army, which was originally heading towards the... to Xia Hong didn't use his blade; he turned sideways and rammed directly....
Chapter 150, "Green Bamboo Fence and Marking Stone, Expanding Territory", is the clearest early answer because it turns Xia Chuan's situation into a concrete plot event. The setup is In the past five days, the leader has used nearly six hundred pounds..., but the pressure keeps building through Killing Yuwen Hu is probably not a difficult task anymore..
Chapter 163, "Almost Annihilated, The Mystery of Gao Yu", is the clearest early answer because it turns Intermediate Cold Beasts's situation into a concrete plot event. It opens with The Iron Refining Furnace's suppression on the deceitful monsters at... and closes on Die!" He Gang, who reached first, raised his saber high and hacked....
Chapter 150, "Green Bamboo Fence and Marking Stone, Expanding Territory", is the clearest early answer because it turns Green Bamboo Fence's situation into a concrete plot event. It opens with Seeing that there was still more than half of the beast blood left in... and closes on [Opened Buildings 4: Iron Refining Furnace (Level 2) Martial Arts....
Chapter 158, "Preparation, Arrival", is the clearest early answer because it turns Shi Lu's situation into a concrete plot event. The chapter gives readers a real answer by opening on The crowd subconsciously looked around and found that Mu Dong and... and ending on They only knew a little about the situation with the Cold Beasts.... In story terms, the chapter closes with "They haven't been home since the night before last.