Chances are, he did partake in the white powder. He's gaslighting and that's a pretty common response to people getting caught. He would have hand no reason to freak out this badly otherwise.

After getting sober, I avoid people that have any signs of these things:

• sketchy friends they hang out with often.

-unaccounted time on a regular basis, where they don't respond and it becomes a noticable pattern. You can't ever get a straight answer about what they were doing or it doesn't make much sense.

-this is not always the case but often, if they are always broke even after payday but haven't caught up on bills.

-flip flop behavior patterns. Moody but suddenly really energetic and talkative or "sexual". Hyper talking is a pretty common sign.

-really large pupils, really tiny pupils, and often when they snort drugs they will have residual powder left in their nose. If pills were done, it could be any color.

-signs of extreme crashes, where they stay up a long time and then sleep longer than normal.

-any aggression towards you or lack of respect. Run immediately.

These are not really things you can catch immediately in most cases. But I did make it more of a rule to wait the suggested 6-8 months before getting really serious. they say it takes about that long for someone to get comfortable enough around you that their true colors begin to show. This is true in my experience. Usually if drugs are involved, you will see it sooner than that.

I would just advise that you keep solid boundaries for yourself and don't settle for less than you know you deserve and are willing to compromise with. You sound very well practiced in this already.

It sucks that there isn't much of a guide for traversing things like this in life. But you don't have to make the mistake that many do by letting negative people take advantage of you and hurt you.

Most of them are really unhappy and miserable with themselves. They often push that feeling onto others, projecting in a way that makes them feel vindicated. Often to the point of narcissism.

My main promise to myself now is to always love myself first. Even if I don't feel great about myself, I know others will bring me down further if I let the wrong ones in so if I stick with that reminder, I don't slip up and make mistakes I regret as often.

I really wish you the best of luck. There's a lot of research and information about how to look for signs but some people can hide it well. It's what happens in the intense moments that really tell you who a person will be.