As a former coke addict, I think I can help you from my experience. It's one thing to take your nose "skiing" every once in a while, it's quite another to become completely addicted. The difference is the former involves a little fun, the latter involves witnessing the decline.
You have every right to express ownership of your concerns. I would first offer help (instead of putting him on the spot to choose between you or the drugs). That would be a mistake.
It would be a mistake because you will lose - he WILL choose the drugs over you, I guarantee it. If he is truly addicted, I promise you that. I've chosen my addiction over my own mother - so, I know what he's going through. It is an unbearable b*tch on hot-wheels. The withdrawals made me have rage attacks so strong, I felt like my skin was the only thin veneer in my life from preventing me from exploding and killing everyone in my path. It was that bad.
I haven't engaged in any use of drugs for years - I do smoke.. but if I had to choose between my best friend or the cigarettes, then I would tell my so-called bestie to hit the road. Because addicts do NOT need ultimatums in their life. Addiction can cause their perception of reality to collapse and since you are inevitably a part of his reality - you will tumble with it if you go down that route.
You will lose the battle with that "choose drugs or me" tactic because you are applying your LOGIC to his EMOTIONS (because addiction causes unbearable emotions). You're not an addict - he is. Different planets trying to manipulate one another. That's like the moon telling Jupiter to "lighten up" when Jupiter already has so much more natural gravity / weight applied to it than the moon. Emotionally, he currently feels like he can't function without the drugs (if he is truly addicted) and you think that logic can override emotions. Good luck with that. Logic is just a flat thought - there's no sensation to it. It's logical to think to yourself to put on a seat-belt, but that is hardly a sensational process.
If you really want to be a true friend, then the best you can offer him is to try to apply your emotions to his. This can only work if he allows you to manipulate him in that positive way. If he refuses, then insist that if getting him the help he needs involves hell and high water - you'll do it. Then as he cleans up, offer him praise with empathy and other positive emotions along the way. As long as he is cleaning up - he will need your POSITIVE support more than ever. Because the test in the future for him will be unbearable. I hope your willing to do this - you'd be the rarest gem of a friend if you did. That makes you my new best friend, also lol
Hope this helps.

doesn't sound like either of you are good for one another

I meet a guy who doesn't have an account on this site problem is i like him but some of the habits he has goes from thoughtless to just being taken a advantaged of like him a lot over all but some of these issues are drug related! I have known him for 3 yrs and just started to reconnect with him! Not sure if I'm helping or hindering him from being clean! I don't want to leave him. I care enough about him but at the same time I can't overlook but what he's doing is going to destroy any possibility of having a relationship with me more than just friends. problem is I don't know how to tell him its me other drugs cuz I don't want to put ultimatum on him I want him to choose me over the drugs !i want to be there to support him as a friend no matter what!but at the same time not financially and then I think it's turning into . I have a hard decision to make to right now need netural advice from someone who has similar experiences. Do I walk away or do I stick around and just be there in emergency situations?

Your right at the site of being there ifsomething goes wrong i do have a heart! But it's not me feeling the need to save him from it ! I don't want to condone it or be like everyone else and walk away or be in denial of the issue!

I helped a friend quit once. Locked him in a windowless bathroom for a week. Reinforced the door with sheet metal, put pads on the walls.

On th third day, he went on a rampage. Smashed the sink, tore a section of padding off the wall and began punching his way through.

Had to handcuff him hogtie style. He threw up the entire week. When it was finally over, we gave him his final test... a heroin needle placed in front of him.

I haven't talked to him in years. I wouldn't doubt that he started using again. I will never hang around another heroin user again. As soon as someone mentions having tried or wanting to try it, I will cut them from my life then and there.

Yeah candy, its not the heinous and animalistic effects of withdrawal I'm talking about, I know that to be true.
I'm talking about the bathroom, padded wall,steel reinforced door and a week after that, he puts a needle in front of him as a "test".
No. Wholly unbelievable.

What kinda idiot gets involved with an addict?

I defended myself against being molested by wielding a tomato. Threw him completely off guard deciding if it was a fruit or vegetable so I had time to run...

I defended myself against being molested by wielding a tomato. Threw him completely off guard deciding if it was a fruit or vegetable so I had time to run...

You already know the answer.

Leave. Now. No romantic ties.

Also, you are being selfish here. You are trying to get this man to pick you over an addiction that seems to have dominated his life. Ultimatum? How about rehab? Intervention? Get with his family/friends if you want to be involved. If he does stop doing drugs?

The LAST thing he needs is to focus on a relationship as a crutch. Even in AA they tell you to get a plant for a year before being emotionally responsible for ANYONE but yourself in romance.

You're fighting the wrong battle. You're fighting for your own agenda. Not his over all well being and recovery.

j/s