Welcome to SR Dreamer, I'm sorry for your pain but glad you found us.
Sadly, active addicts behave badly, they lie, turn things around to make it anyone's fault but theirs, and they simply get lost in their disease of addiction.
Whether to stay or try to mend things, or to leave, is entirely up to you. We can't decide that for you. Throwing things is not a good sign though and if abuse of any kind follows, it should not be tolerated because abuse escalates along with the drug use and it's a dangerous situation to remain in.
What has helped me, was going to meeting and learning to work a program that helped me find peace and happiness in my life...regardless of how my addict (my son) was doing. If there are any Alanon, Naranon or CoDA meetings in your area, you might want to try some.
And take a good read around here. It will help you see the enormity of addiction and how much it affects each of us.
You are among friends here who understand your pain and who will walk with you as you figure out what you need to do to help yourself.
Hugs