I really feel for you, you sound like my ex, and ive done this to 2 girls so far but no kids. but now i wont have a relationship until im clean, its just not fair. You have to understand that the drugs are #1 in his life. if he had to choose on the spot between you and drugs he would have to think about it, and then choose drugs, cause it just hurts so much to stop and sounds like he doesnt know any other life.
I spent 11 months in rehab and was clean for 3 years, so i know what its like to be clean, and it takes a lot of effort. Hes never been "clean" the whole time hes been with you, think about it, how can you take anything he says as useful when you know he is a secretive and more or less professional liar? if you are smart, just trust your gut and only judge his ACTIONS and his words mean NOTHING. ZERO. NOTHING get that in your head. of course he means well, but until he has a rehab between the last drug he used and the present moment and preferably something 6months+, he is an addict thru and thru, with all the behaviour that comes with it. secretive, unexplained abcences, hes always late for anything, going to the bathroom and always taking a while..... understand the habit HAS to be fed. then you come 2nd. thats it. until that craving is satisfied, nothing else is on his mind