Xiao certainly isn't the most romantically inclined person. He would constantly avoid interacting with you and postpone plans. He couldn't be to blame, though. Maybe that was simply not his kind of thing.

Before you overheard him speaking to some of his friends while carrying a bento box and slightly glancing at him.

Xiao laughed as he spoke poorly of you, "Nah, I’m simply just using them. They're so naive, I can't even stand them."