Spouse with addiction

I come here to post due to the anonymity and the fact that I get real people that are unbiased giving me opinions. That being said I would like opinions about this situation I'm currently dealing with.

Back story:

My husband of 4 years (been together 8) had(s) and addiction problem to benzos. He overcame it by spending a few months in the county jail for stealing to feed the addiction. When he was released, he swore that he was done and couldn't lose his family. Up until recently (a month ago) he kept his word.

A month ago, he confessed to me that he had taken 3 xanax and an oxycontin..only after he had a seizure and scared the living shit out of both of us. The last time this all happened 5 years ago, I had given him an ultimatum. If he ever did another pill, I was taking our daughter and we were done. Obviously I'm still with him. After the seizure it scared him so badly that he made an appointment with a psychiatrist for himself. He so scared that he screwed himself up and is going to die.

Then, while my daughter had his phone playing with it tonight, someone had texted him..she opened the message and I saw that he had texted one of his friends to trade something for more pills.

I'm sitting here in awe. Like what the actual hell. With that being said, I didnt say anything. I'm tired of fighting this battle, I love him, but honestly I feel numb. He doesnt feel like my husband since he lied to me. He broke my heart and even expressed to him these feelings.

Now I'm in this state of do I even say anything or do I just let him do it and watch him die. Quite honestly at this point, him dying seems to hold less heartache than watching him do this to himself and our 4 year old daughter. Harsh I know....but I'm just indifferent.