Welcome to SR.
You will find lots of support here.
Especially in the Friends and Families of Alcoholics and Friends and Families of Substance Abusers forums.
Buzz on over there and have a read.
Great experience, strength and hope.
With regard to your situation, I would say that leaving your addict is probably a good idea.
Life with an addict, as you know, is just a very hard road.
Also, and I say this a lot round here, please protect your financial stuff.
Don’t leave bag with credit card around. Don’t give out pins for account access.
Addicts can be absolutely heartless about taking someone’s stuff if the need is upon them.