I completely agree with atalose. Don't make your relationship contingent on rehab. My exABF went to 30 day rehab after an ER/ICU detox (I now believe accidental although he told me purposeful), and I see now that he wasn't committed to or ready for detox, and went mostly if not entirely because I talked him into it. And he drank the whole weekend he got home, trying to hide it from me, which was the beginning of the end for us.
I learned here that that's pretty normal. Going to detox because you want him to doesn't have a high chance of success, and it isn't what you want either. You sound like a good part of you is ready to go. Go. And if he can get sober and really mean it, like Atalose said you can see.