Start swinging :) haha.
On a serious note, you do you---do what makes you feel right, healthy, and be yourself. She enjoys it, if her friends do too, then so be it. Be faithful, treat her right, all will be well.
I'm surprised there aren't bigger fish to fry....(meaning crimes)...the amount of law enforcement I know that uses or has used is astounding. Not to mention the professional athletes that pop on a test and everyone is all "it's no big deal."