Hi Dragonfly,
I recently started seeing a counselor, who has done work with addicts/alcoholics for two decades plus. She leans toward thinking that an intervention can be helpful and has seen them work. There is a book, Love First, which talks about interventions. It is a Hazelden book, I believe.
Many believe that the addict/alcoholic needs to hit bottom before they stop, if they ever do. The bottom can be losing everything, maybe not, and sometimes, it is unfortunately death. The book talks about perhaps raising the bottom for your loved one, that with loving family and friends iintervening before the loved one suffers irreparable damage, they may agree for treatment. It can't hurt; it may not work, but it is worth a try to some of us.
they can always say no, so it isnt forcing them to do anything. you don't make them go for help. But you do let them know that they are loved and they see how their choices are affecting those who love them.
good luck to you and your boyfriend.