Mera, I understand that it would be nice to have your boyfriend support your efforts. But, it's not essential. You have his unconditional love, so use that love to do this for yourself.
I found out early on that my husband had no interest in my addiction, in why it happened or how to help. He simply wanted me to get better. To him, this was all about me, my problem and I needed to fix it. Over all these years, we have very rarely talked about it. So, it's become a very personal journey for me and I'm happy about that.