There could be a tracking device on Temari that Konoha had given to Suna as a part of an alliance security measure. When Itachi kidnaps Temari, the device is activated and Konoha is alerted. Naruto, being the one always eager to jump into action, is the first to volunteer to go after Temari based on the signal from the tracking device.
Naruto could find out through a messenger from Suna. Since Temari is an important figure in Suna, when she is kidnapped, Suna would send word to Konoha asking for help. Naruto, being one of the more active and well - known shinobi in Konoha, would be informed of the situation.
One possible plot could be that Itachi, perhaps on a mission for the Akatsuki that is not fully known to the other members, sees Temari as a valuable asset. He kidnaps her to extract information about Suna's military strategies. Temari, being a strong - willed kunoichi, tries to resist and escape at every opportunity. Naruto, upon hearing of this, might set out to rescue her, seeing Temari as an ally and friend. This could lead to an interesting dynamic where Naruto has to face off against Itachi's powerful jutsu and outwit him to save Temari.
Temari might respond with a mix of annoyance and amusement. At first, she could be put off by Naruto's flirting, seeing it as too forward or silly. But then, as she gets to know him better, she starts to be more amused and might even flirt back a little, showing that she's starting to enjoy the attention.
In the fanfiction, Naruto might comfort Temari by simply being there for her. He could offer her a friendly shoulder to lean on and listen to her problems without judgment.
Sasuke would likely be enraged. Naruto is his rival and also, in a way, his friend. He would immediately set out to find Naruto and confront Itachi. Sasuke has a strong sense of pride and would not let his brother get away with this.
Sasuke could also be confused. He has always had a mix of emotions towards Itachi, including love, hate, and envy. Being kidnapped by him would add another layer of confusion. He might wonder if Itachi has some new plan or if he's finally going to reveal some long - hidden truth. So, he might hold back on his full - fledged resistance and wait to see what Itachi has to say.
Fanfiction.net is a great place to start. It has a large collection of 'Naruto Itachi Fanfiction'. You can search by popularity or by rating to find the ones that are most highly regarded. There are also filters to find completed stories or ones that are updated regularly.
Naruto could use his shadow clones. He might create a bunch of clones to distract Madara while he finds a way to break free from whatever is binding him. Since Madara is a powerful opponent, Naruto would need to be very strategic with his clone usage.
In certain fanfictions, their relationship development is slow and steady. It might start with a simple exchange of letters between the two villages. Naruto, being Naruto, might write something really sincere and heartfelt in his letter. Temari, who is initially skeptical, starts to be intrigued. As they continue to communicate, they might meet in person more often for diplomatic or ninja - related matters. And during these meetings, their relationship blossoms bit by bit. There could be moments of awkwardness, but also many heart - warming exchanges that build up their connection.
Some disgruntled members of the Sand Village itself could be the kidnappers. Maybe they feel that Temari or her family has wronged them in some way. They could kidnap her in an act of revenge. This would add an interesting layer of complexity to the story as it would involve internal village politics and betrayal.
Check out Tumblr. There are often posts about Naruto fanfiction, and you might be able to find some great naruto dating temari fanfiction through Tumblr's search function. Additionally, some Naruto fanfic communities on Reddit could also be a source. Just make sure to read the rules of the subreddit before posting or asking for recommendations.