I want to join the military, but I used to smoke pot 3-4 times a week for 3 years. Do I have to lie to qualify?

I’ve never been in trouble for it – everyone is telling me to lie to meps…....I don’t like lying – what should I do?I am very serious about joining the military and I just don’t know what to do. I heard if you’ve smoke more than 10 or 15 times or something you are disqualified. What are the REAL rules and what should I do. I hate being dishonest and I heard they look into that anyways.