smoking relapse !

for like 2 months, I recently relapsed whilst out with friends and don't know what to do! I just can't see stoping completely an option since it won't be the last time I'm out with friends, so should I just accept it and smoke during the weekends? Or just smoke and stop for good later on in life? All my friends tell me that I should enjoy being a teenager and that I should just stop when I'm older (that was the plan, but I decided to get a head start) ahhhh I'm lost