Pedophile : an adult who is sexually attracted to young children.
Yuri is not attracted to Xinlu sexually neither romantically. He finds him beautiful and that's that. They fall in love when the are both adults. Yuri had no emotional, sexual , romantic connection with Xinlu when he was a minor, hell Yuri just knew Xinlu as a beautiful boy.
Define love? sexual and romantic love is not the only defination of what 8 billion people feel connected towards each other. Love can be eros, agape, familial, hell even self love blah blah..the love Yuri had is more of adoration, devotion, and leaning to agape. Is it harmful? No. Did Yuri's love forced Xinlu into suffering, pain, trauma, No. Was Yuri's love forceful, damaging, obsessive, possessive, predatory.. No. Xinlu is not being manipulated, not coerced, not controlled. Sure it's weird to living folks like us but the way of love for Yuri is very different from others and that is exactly what the author try to show us. His love only evolve or changes after Xinlu relentlessly pursue him, jumped on him, he demanded Yuri to change his ways of loving him.

Why did nobody tell me that Yuri is a fucking pedophile bruh here I thought it was better than passion