"No, it's okay, I'm going to stay here," Calix said.  Not that he didn't trust Blake alone with his sister... actually, he didn't trust Blake alone with his sister.  It wasn't anything personal, he just wanted to keep her safe.  "So what, are you guys official?" Calix asked.  Usually Adelfa would tell her these things, but she kept it more secretive with Blake.  Look where that got her.