Rin Nohara, Obito Uchiha, and Kakashi Kiki are all students of the Watergate class, and have been following Namikaze Shuimon on various tasks since graduating from the ninja school, and as the only girl, Rin Nohara is naturally favored by Obito, but Kakashi has always adhered to his principles because of his father when he was a child, and he refuses to stay away from anything and people.
Judging from Rin's reaction to Obito and Kakashi, the person she likes is Kakashi, and even after Obito's death, Rin is ready to confess to Kakashi, but is stopped by Kakashi.
Ever since the three of them were assigned to a class, Obito had a great affection for Rin, who liked Kakashi, and Kakashi always stuck to his principles, believing that useless people were waste. Treat Obito and Rin as a liability.
It can also be seen from Kakashi's gaiden that Rin likes Kakashi, Kakashi has lived alone since he was a child, many times Rin peeks outside and observes Kakashi's every move, while Obito often observes Rin's every move behind Rin.
And the one who influenced the three of them the most was the Battle of Kaminobi Bridge, where Suimon was ordered to destroy the enemy's supply line Kamigami Bridge, and the words that affected Kakashi's later life in this battle also came out of Obito's mouth: Those who break the rules of ninja are scum, but those who abandon their companions are not even as scum.
Later, while rescuing Rin, Kakashi was blinded in his left eye, and when he escaped, he was hit by a rock, and Obito was crushed by a boulder in order to save Kakashi and was on the verge of death. Before dying, Obito gave Kakashi his Sharingan, and entrusted Rin to Kakashi. Just when Kakashi rescued Rinn, Rin was ready to confess to Kakashi after Obito's death, but was rejected by Kakashi, which made Rin very sad in her heart, and the words were never spoken.
Rin likes Kakashi, and this biggest manifestation is when Rin was planted with a spell to become a three-tailed pillar force, and after Kakashi rescued Rinn, Rin let Kakashi kill him, but how could Kakashi be willing? So when Kakashi was about to take on the enemy with Ratchet, Rin jumped out and died under Kakashi's Ratchet. This move has two intentions:
First, Kakashi is unwilling to kill himself, and he cannot commit suicide because of the spell, so he uses Kakashi Reiche to end his life, which is the only option;
Second, since she knew that she would definitely die, and she had to die, she most wanted to die at the hands of the person she loved the most, so when she saw Kakashi using Ratchet to solve the enemy, she resolutely stood up and died willingly in Kakashi's hands. This is her greatest wish and the most satisfying.
Therefore, Rin really likes Kakashi, and only has a good feeling for Obito, but because Obito died too early, Rin did not make it clear to him, or did not want to hurt him, but if Obito was alive, Rin would have made it clear to him sooner or later and confessed to Kakashi.