is it okay for my husband and I to be so close again?

We've been kinda seperate for a month now because he relapsed, taking drugs again. We have a 5 and a 1 year old so I decided to stay away for a while- at least keep him away from the children even tho he'd never ever do anything to hurt them.
Basically we all were on NYE together and had some quality family time after a month and everything was perfect and a few days later he surprised me on my birthday. 
I told him I wanted everything like it was before his career started (he's in the music industry so he's SO stressed all the time and working all the time and super busy) so he got me a car I used to want a few years ago. Back then we basically had nothing and I was like "you can have whatever you wan't I want that lexus" idk it's just always been my favorite.
He got be this car even tho I have a Bentley I barely even use as a cute little symbol he's trying to make it work for me.
The kids wanted to stay the night yesterday so we did and after my husband tucked them in we were talking all night about our childhood together and stuff.
This morning he didnt wake me up and drove our son to school and our best friend picked up our daughter because he always has her like once a week. 
My husband made me breakfast in bed and was just so sweet I really missed that so much but now I feel like is that even okay?
He's still taking drugs still refusing going to rehab or seeing a therapist. But he's trying so hard he loves our children and me more then anyone and anything I trust him with that.
I don't know what to do or feel I'm confused.