Cal loves all his newly introduced mates! Lol, so obviously I think they'd be friends. Especially since he's good mates with Henry, since Cal's known Henry forever. Though I do think that Forrest's lack of interest in his classes might bother Cal - I'm sure Cal's tried to help him with coursework and such, especially in Ancient Runes. That and the drinking frustrate Cal, so they might get into minor tiffs at times (Cal's a bit confrontational). What d'you think?
Evie - they might be in the same House, but I think the boyness, overly outgoing-ness, and the drinking combined would be too much for her. She'd probably try to avoid him. :/