My boyfriend is an alcoholic

I’m not sure if this is the right place to share this, but I really need others advice and perspective. I’ve been in an on-and-off relationship with my boyfriend (35) for the past 3 years. He’s an alcoholic, and I honestly don’t know how to help him anymore.

He lies about his drinking, and it’s caused serious damage to our relationship. We used to live together, but I had to move out because of how bad it got. He’s had three DUIs, and no matter how many times he promises to change, nothing ever actually changes.

He’s been through a lot, he lost his mom at a young age, and his dad hasn’t been in his life for years. He doesn’t really have anyone else. That’s part of what makes this so hard. Every time I try to walk away, he threatens to kill himself. And I’m terrified that if I leave, he’ll actually do it… and I won’t be able to live with that guilt.

I feel stuck. I want to help him, but I’m losing myself in the process. I don’t know what the right thing to do is anymore.