Anythings possible
but...I've seen many well meaning couples drag each other back into active addiction - so it's a challenging scenario.
I think the only way it can work is for each of you to focus on your own recovery.
If he relapses you have to be strong enough to stay on course - and vice versa.
Not saying you can't utilise the same things, but your support network should be distinguishable from his, & vice versa.
best wishes to you both
D