My issue isn't with the age of the boys because they were all over the age of consent. (Am I personally uncomfortable with a 40+ year old man hitting on teenagers...? Yes. But that's my issue.)
My issue with Foley is that what he did amounted to an abuse of his power as a supervisor/employer. Not only were these guys young, but their employment/internship was potentially under the influence of Mr. Foley. He could coerce them with threats of losing their jobs or seduce them with promises of promotions or other jobs. It's out of line and probably a textbook definition of sexual harassment.