Should i work things out or move on?

ok so i been with my b/f for a year and a half now.like all couples we have our ups and downs.im going to admitt upfront that this is my second long term relationship. my first was with the father of my two girls. well anyways. we moved in and a few months later moved out bcuz of a bad situation with the people we roommated with. i tried to get help from my fam but the roommates we had made up a huge lie about me and to make a long story short. i had dcf on my case, my relatives against me and had to leave their house. dcf case was dropped bcuz they realized they were lying. they knew i was 'a fit mother'. well we ended up roommating again but with one of his really nice frineds. everything was perfect. we got along great, were stable and generally were doing good. well four months down the line the guy we were roommating with decided to bail his babymomma out of jail instead of paying the rent with the money we gave him. we were forced to move again. [yea i know , we should stop roommating!!!] anyways. we moved to a decent neighborhood. we struggled a lil bcuz the rent was more. he had two jobs and i was receiving a check. we were ok. well one job closed, our first set of roommates moved in the same building and we started falling apart...... we havent paid rent in three months, our light has been cut off twice, and we started fighting. all the time. mainly it was me. bcuz i got upset that he was hanging with the same people to called dcf on me. i been told him that i didnt want anything to do with them. they make my life a living hell. he didnt care that it made me upset. he started hanging with them all the time and to save his *** from getting yelled at from me, he'd lie about where he was.i got pregnant.he was happy and i wasn't. dont get me wrong i love kids but i jus didnt think we were in a good situation to bring more kids into the world. i was having an ectopiuc pregnancy and had to have emergency surgery to have a tube and the baby removed. i was devistated. he was too. i was super depressed from everythinhg going on............i left out that hes a heavy smoker. if he doesnt smoke he cant eat, sleep, work....function. that pissed me off too and was another reason for me arguing with him. im not going to lie he helps cook, clean, take care of the kids, and me when i was sick. hes all around a good guy. i donno. i just want more in life i want to get out this terrible situation. i want to go back to church, get a good job, have a stable home, etc. i kno he wants the same but i dont see the same drive in him. he only worries about smoking. i think hes either selling or has another girl bcuz when he gets paid all his money is gone in two days. and he hasnt paid a bill or given me any of it. im jus so confused on what to do. well i moved out to my bros house and told him if or when he wanted to change his life n do right we can get back together. he tells me he does, but i jus dont believe him. my trust is out the window. he promised me over n over that he was going to stop smoking n the next day started again. he lies to me about who hes with or about dropping a girl home after work... i kno im all over the place here but i really do need some advice. help!!! should i try n work things out with him or move on with my life?