Did my marine bf lie about the day he enter boot?

i suspect my bf of lying about his date of entry into bootcamp he did not let me take him to the hotel and his sis was acting fishy. he said he enter may2 and graduate august 5 he is in the 3rd bn can someone tell me his entry date becuz i believe u can see this somewhere online lol i dnt wnna b stocker status or nothin but i dnt wnna confront him till im sure