I’m the same as you dazza. But my problem is just once a week or every 2 week. My gf is quite good to be fair with me. God knows why.
But going back to your question, and I really can’t give advice, but just get yourself sorted 1st. That’s what they teach you in recovery. Think of yourself, get yourself clean and everything else falls into place. It might of only been a few week since you used. But thats nothing. You can even tell yourself you won’t use again. But your brain tricks you into using. Just keep showing her things that’s proving you are doing your best. Eg.. Meetings, apps, drug test.