Mozelle Rios & Prudence - Fellow fifth years, probably friendly. Mozelle is a very kind girl who isn't entirely horrible at classwork, so she could also be helpful with homework (even this past year)!
@"Naeva Lécuyer" & Prudence - Naeva would 100% have fit into the dislike category, lol.

Lydia Harleston & Finlay - Lydia is much older than Finlay and works in the Creature-Induced Injuries ward at Hogsmeade Hospital. Would probably be the sort to encourage his interest in Herbology, as she tends her own garden!