Грамматика и Лексика

Преобразуйте, если это необходимо, слово CLASSMATE так, чтобы оно грамматически соответствовало содержанию текста.

Peter Parker decided to leave heroism for a while and went with his ________ on a summer vacation to Europe. But actually, there was no time to rest as Venice was attacked by a creature from a parallel universe.