If he never liked Yoshino then maybe the author shouldn't have wasted a bunch of chapter having him getting hives when he is around any girl except for her, being unhappy with Aki, regretting not being with her, being told by Neko they belong together and chasing her after she tries to distance himself from her, with that fucking chapter ending with them embracing each other while the sun rises. It's also worth mentioning that all of this happened after he started dating Aki, meaning Aki had won already and they only needed to solve the whole revenge issue and we could have gotten a decent ending.
Like I said, I don't mind the Aki ending, she was always the obvious winner, what I do mind is the author wasting my time with all those chapters that seemed to be setting up a surprise Yoshino ending only to go back on that in the last chapter and have Aki win EVEN THOUGHT SHE HAD ALREADY WON. No one even thought Yoshino was a love interest up till that point, he basically gave the people who liked her hope only to take it away at the last second, which caused them to be angrier than if had Aki just won.
I want to be believe there was some sort of conflict between the author and the editors and that's why these last chapters were such a mess because otherwise this is some pretty dickish thing to do.