my partner smokes. we have a little boy. he refuses to let himsee anything bout it (our little boy is only 8 mnths) i was annoyed when i found out coz before my parnter i was with a dick who who a pot head, he didnt work an ended up selling our stuff to support him self, so i left him.
my partner now does it coz of a few reasons. 1- his so stressed with everything going on in his life. 2- it relaxes him before he goes to bed and 3 coz if he dosnt his super hyper,
so mab just sit down an talk to the boy bout it, dont forget you have a baby to think bout who prob needs his dad an if you an his dad can work something out that would be best, coz you didnt move away from everyone just for the sake of it, i moved from my family and friends, a 6 hour flight away. and if you sit down an talk an he gives you god enough reasons for doing what his doing an for what he HAD been doing, then try an fix it. it could be alot of things, one of the friends his staying at at all hours could be pushing it on him, thats why you need to talk to him.
BUT if he says something like i do it coz its fun, or i coz its cool or anything like that, kick his ass to the curb. hope this helps