Is it ok with you that he uses your home as a flop house, a detox facility? He goes into your bedroom and passes out and you sleep in the spare bedroom...for the weekend no less. Doesn't he have any responsibilities in the home?
IMO there is something real wrong with this picture.
Glad to hear that you have opened your own account, and, I hope that you never give him your truck keys again, that would be very bad judgement on your part.