Other than u think u still loving him, anymore reason u still wanna be with him?
U see, 'love' does not give u all power to accept someone regardless how good or bad he/she is
U can say love is blind, but we human are not blind (mostly), since u are clear with ur situation, why dont choose a right decision with a cler eye instead of blinding urself?

If u still wan to maintain, theres no other way but throw him into that duno-wat center to make him throw away his addiction.
Of course if u do it urself is quite danger, try to gather all his relative friends and urs to force him in
A drug addict is a serious addict where he himself wont wan to throw it away even if u point a gun at him
They wont consider that as saving themself but killing, so people around will be the one to save him

If he really cant be save, divoice is the only way
continue on bring harm to both of u especially to ur innocent baby
Think bout his/her future living with a drug addict father
How u gonna take care of everything with a drug addict husband?
24 is still young enough to look for another partner
Marry in the age of 25-30 is still normal and safe
Most importantly is to find a person who can really walk through the life with u