Financial talk

I have asked ?'s before regaurding the relationship I have with my soon to be ex husband. We have 2 little boys who r 2 & 7 yrs. He has a coke problem and used to cheat on me A LOT. I had thought he stopped cheating a year ago but now Im not so sure. For the last 3 weekends in a row he has snuck out when i fall asleep to go out on a coke spree and then would come home the next day apologizing but not exactly showing much remorse. Well this weekend he snuck out Saturday night and I havent seen or heard from him since. To top that off I checked our account b/c we had around $700 in it - well he left me & the kids with $140. He has never went this far as to spend so much of OUR money. I mean its my money too that he snorted up his nose, not giving a damn about our kids AND to make matters worse HE KNOWS my transmission JUST went out of my car on Thursday and already didnt have enough money to fix it and trouble finding a ride to the store, work ect. but didnt even bother to worry if i was able to make it to work today or if our kids had food, diapers, etc. b/c he took all the money. IS this finally enough hurt to say I GIVE UP? I am sorry I just want to cry for being so dumb & nieve and letting him fool me. I am so scared he will try again when he DOES come home. I want him GONE!