Alexander was out to make amends with certain people. It was just a matter of figuring out how to do it and who they were in some cases. With Justin, he only had a name. Some asking around got him a description and a house so then it was a matter of finding him. Eventually, he had caught another Hufflepuff who pointed him in the right direction. The library... That was as good of an excuse as he could hope for.
He grabbed a book on the way to Justin just to give him something to hold as a prop in this "accidental" meeting. Oddly it was the language of flowers which was appropriate in ways only he would understand at that moment. He was casually "reading" his book (he so wasn't - he hadn't put on his reading glasses) as he approached the table, listening to the faint murmur of the other boy's voice. Hm.
"Y'all and your metric system, I swear," he chuckled faintly as he shut his book and grasped the back of a chair with one hand. "You wouldn't happen to know where I could find a fella named Justin would you?"