His eyes widen in surprise at the news. Everything surrounding his soul-twin's death and following resurrection had been emotionally charged, frantic, worrisome. He'd never meant to cause a rift between his soul-twin and this Lan Wangji. They seemed to have resolved it, but... that the other Wei Wuxian is hurt, even now? He can feel himself start to retreat.

"Oh..." is all he says, followed by a hissed curse under his breath, "I... fuck, Lan Zhan, I'm so... I didn't mean for..."

He takes a step back, feeling foolish, and worse, guilty.

"I'm so sorry," it's something he's always struggled to say, but in this case, it's warranted.