What he said is dumb, yes and it makes him looks like he doesn't take Seojoon's feeling seriously and just being selfish. But, he had a long time crush towards Hajin and all this time he thought Hajin was the one for him. He didn't realize what he felt towards Seojoon is also love and by the way he act, he prioritize Seojoon more than Hajin. He can let go of Hajin, but can't let go of Seojoon. Just give him some times, this blondie will eventually falling even harder for Seojoon ╮(￣▽￣)╭
What he said is dumb, yes and it makes him looks like he doesn't take Seojoon's feeling seriously and just being selfish. But, he had a long time crush towards Hajin and all this time he thought Hajin was the one for him. He didn't realize what he felt towards Seojoon is also love and by the way he act, he prioritize Seojoon more than Hajin. He can let go of Hajin, but can't let go of Seojoon.
Just give him some times, this blondie will eventually falling even harder for Seojoon ╮(￣▽￣)╭