7x18 "The One with Joey's Award"

Joey is nominated for a "Soapie" but loses, much to his chagrin. But when he accepts a different award on behalf of a co-star, he finds himself unwilling to hand it over. One of Ross's male students claims he is in love with him to get a higher mark on a test. It is revealed by another student that he is straight and has fooled other professors in a similar manner. The student ends up with a C after some of Ross's colleagues overhear a conversation that made it seem that Ross and the student dated.