The Couple
SakuHina (佐久ひな SakuHina) is the term to refer to the romantic relationship between Sakura Haruno and Hinata Hyūga.
Their Relationship
Part I
Chūnin Exam Arc
After Hinata and Neji's fight during the Chunin Exams, it was shown that Sakura had been concerned for Hinata and had run down to the arena along with Naruto and Lee, to make sure that her friend had been safe.
Part II
Ten-Tails Revival Arc
Sakura and Hinata were both shown to be good teammates and work well together. When Sakura inquired about Naruto and Sasuke's whereabouts and actions, Hinata, who had seen what they had done with her Byakugan, informed Sakura.
Blank Period
The Last: Naruto the Movie
Hinata and Sakura appear together, with Sakura often bringing up their relationships and aiding Hinata with her feelings for Naruto while telling her about her own relationship with Sasuke.
Boruto: Naruto Next Generations
Mitsuki Arc
Hinata and Sakura run into each other outside the Hokage's office while Boruto and Sarada are still on their journey to find Mitsuki. Surprised, Sakura greets Hinata and asks if she's here to see Naruto. Hinata says that she came to bring Naruto a change of clothes, but she seems solemn.
Sakura is about to ask Hinata what the problem is, when Hinata suddenly apologizes to Sakura. Since Boruto was the one who convinced Sarada to leave the village, Hinata feels like she is to blame for what will be Sarada's eventual punishment for defecting. Sakura smiles and tells Hinata that Sarada's and Boruto's choices are their own, and Hinata has nothing to apologize for. All that Hinata and Sakura can do is pray for their childrens' safe return.
Evidence
None.
Among the Fans
SakuHina is a relatively well-known pairing throughout the fandom. As both Sakura and Hinata are one of the most well-known female characters in the series, they are often compared and set against each other as 'who's better' by many of the members in the fandom. Also, as both girls have a connection to both members of the SasuNaru pairing, another reason why this pairing is shipped is because of the similar feelings that these two characters hold towards the one they have feelings for in the series. Their rival pairings are NaruSaku, NaruHina, and SasuSaku.