Kurt tensed up immediately when his dad asked about Blaine's parents, because that was exactly what he'd been trying to avoid. He stepped over, slipping his arms around both of them and just holding onto them. He wanted to keep both of them close and keep them from being sad or hurt, and he knew there was no way to do that at all. So he just had to hold on and do his best.
His chin rest on Blaine's shoulder and he took in a deep breath, not knowing what to say.