advice??

No judgment, no negativity.
Okay so I am 14. Somehow I have mange to make a fair few amount of people think I've done drugs (weed mostly) before, but I have never said those words.
On Monday me and two of my friends are going to smoke for the first time, one of them has smoked before. The person who has smoked invited one of the people who thinks I have smoked before. What do I do? Will his person be able to tell I've never smoked before? I really need your opinion please