<human>: Allow me to preface this by saying this may not be the best place to ask this particular question, but it concerns my friend, so...  

So last night me and my friend were chatting. She smokes weed fairly regularly, which I have absolutely no problem with. She used to smoke cigarettes, and apparently has one once in a blue moon when she's high, which I'm less ok with, but oh well. But last night she casually mentioned that she almost tried cocaine, but backed out. When i questioned further, she said she probably wouldn't ever try it, but there's a teeny possibility she would.  

Here's my question. Am I completely in the wrong to say this *really* bugs me? I don't have a problem with marijuana, but I *do* have a problem with coke and other hard drugs. I'm concerned that if she tried it once, she's going to want to do it again, and again, and again. We haven't known each other long, but she's my best friend, and I wouldn't want to lose her to it. Am I completely overreacting? Would it cross the line to tell her tonight that I would be really quite upset if she ever did it?

Provide a brief overview of the text.
<bot>: Best friend mentioned she almost tried coke, and it's really bothering me. Am I out of line to tell her I don't want her to ever do it?