
Personally, I like Chihaya x Arata, but I've been saying for awhile now that I thought the author was going to pair up Chihaya and Taichi because Arata isn't in the series very often.
But the tides are changing. Arata has been getting a lot more screen time, and we've been seeing from his POV in the pat few months. I now believe that Arata has become a real contender.
He's choosing to move to Tokyo to win Chihaya's heart even though she hasn't encouraged his affection. Arata's love for Chihaya is like their mutual love for Karuta. It's selfless.
When Taichi confessed to Chihaya, she rejected him. After that when Taichi quit the Karuta club, Chihaya knew that the only thing she had to do to get him to come back was to agree to be his girlfriend. Despite this, she still didn't say yes.
But Chihaya's response to Arata was not a "no". It was a "not right now". And rather than trying to give her an ultimatum, which is exactly what Taichi did, Arata accepted Chichaya's dedication as a legitimate reason why they couldn't be together and agreed to wait for her.
While Taichi's response would have been completely understandable in another situation, he had made a commitment to the karuta club. He was the president. Quitting was selfish.
Yes, Taichi has been in love with Chihaya his whole life, and if they don't end up together, I will be sad for him, but Arata and Chiahya are a much better match.

Soooo Trueee
I was not expecting the gruff delinquent to be the uke.
Omg saaaaame
I guess noone did :p