Be wary of a friend whose lifestyle is getting a bit extreme in your eyes. They represent a cautionary tale that you don't need to learn. You have taken your educational walks on the wild side -- and may again, although right now is not the appropriate time to do so. You don't need to re-live anything through this person. So if you need to get some distance from them temporarily, don't feel guilty about it. Do what is right for you. They wouldn't expect you to do anything less.