If you are in high school and you only smoke weed like maybe once or twice a week can you become addicted?

ok well im in grade 10 and ive been around it for all my life never did it my self my friends all saying just do it soo i did once i swore to never again and its been a whole year since now im getting curiouse about the subject can it really do that many bad things to your body compared to smoking cigarretes me myself id never smoke tobacco its a nasty habiit . soo can somone help me? oh and btw what are some long term affects that are very noticeable and short term things ?