I think my BF may be using drugs?!

I think my BF may be using drugs?

I have ongoing issues with my fiance.
He just acts really sketchy and Ive had cheating suspicions and such but I really dont believe that that is it. Ive told him there is something he is not telling me but he denies it. Ive joked to myself that he is like in a gang or an international spy or something. Even a dealer. But it has only occurred to me now he could be using.
He has said he has had drug problems in the past (from heroin to coke to pills) He smokes weed and is fine with me knowing that. Though he often says he has to work late (relieving CEO for a big company) He works bizarre hours an long hours. He never has any money an is stayin with a friend though he earns all this money I never see it. He is always walking out and on phone. He looks always on edge. Though he got really angry when I had a pill recently and nearly left me cause of it.. How can I tell? Ive heard you can smell it with some drugs? I just want to find out. Help him. Any advice?

3 weeks ago
Also what I can do to... to know for sure or how I can catch him out or let him know i know. Asking him directly will make it worse and him just get defensive

3 weeks ago
No i have explored that option and it just doesnt seem like it hey. Im sure he isnt cheating

Trust your instincts. They're usually right. And his behaviour sounds like he's a druggie. Have you ever been to where he lives? Have you seen his place? The things you mentioned above are also signs that he has another woman.

The fact that he never has any money should be a huge red flag. Why do you think he walks out to talk on the phone? He's hiding something from you. Ever been to where he works? Have you ever even driven by the building where he supposedly lives or works?

Shadow him a few times, or get a friend to do it for you. He's up to no good. Could be dealing. Get rid of him NOW.