(( this is presuming that really old thread of theirs at the boy's aparment took place))
Gareth grabbed his brother's arm. "C'mon," he said. "Let's go. I might have been mistaken. Maybe it's not actually him and..."
Gawain looked at him. "Sorry, little brother, but I have to know." They didn't exactly part on the warmest of terms after all, the last time.
And so, taking Gareth's hand, he darted across the road, until the two of them were but a couple of steps away. Close enough to know that his little brother's instincts were very much correct.
"Hullo." He was so focused on Mordred, he hadn't noticed the man at his side. Yet.