I know the best way to get the best advice is to be 100% honest. So here I am. 

I met my husband 9 years ago when he was divorcing his ex wife, they have two kids together, a boy and a girl at aged 6 and 3. The ex wife was a stripper at that time and she slept with at least 10 different guys when she was still married to my husband and he was staying cause the kids were young and he loved his family. We started dating and he finally married me after a year and half. The ex wife’s boyfriend broke up with her and she ran back to my husband, she told me they were still sleeping together at that time and I didn’t believe it at first but she sent me their “ sex tape”... when I was at work...when I was helping him to run his business... I decided to file for divorce at that time and moved out but he begged me back at the last minute so I gave him a chance.... Things were getting better and I realized he was still telling her he loves her and that he wish they would work out... he told me he couldn’t really let it go and he feels like he is still very attached to them cause they have kids together. They even kiss each other during the kids exchange.... went out for lunches and had sex when I was at work... they use the kids as an excuse for seeing her and talk to her all the time... he even told her he is just using me to run him medical supplies business ( He met me at work... when I was a top sales of the company I worked for then I left my job to help him...) 

I guess he decided to be good to me after he found out she was sleeping with all kind of guys still and lies to him, She started drama and filed TPOs and called CPS on us every week and she even taught the kids to do the same thing... my husband decided to not talk to her or the kids for almost two years ( we’re paying $2000 child support a month)...then we finally have a good relationship and have our first baby... that was the happiest two years I even have with him... then everything went back to nightmares after he decided to take his son on his birthday and shower him with $1000 gift... the ex wife also started calling and texting everyday and told him how much she wants him back and of course she started attacking me in any way possible...I was so stressed out but still try my best to be a good stepmom for the kids... six months ago. CPS called and they said they took the kids after their mom got arrested for domestic violence so we had to let them moved in with us... I was 9 months pregnant with my second baby and my step daughter was very disrespectful to me, she get mad when I told her to put her feet down when she was eating... she got mad when I told her not to talk on the phone and scream and laugh at 3:00am in the morning... she got mad when I told her to put her dirty panties in the hamper instead of throwing them in my living room.... she just gets mad at everything and she always pushes my son after I told her to behave like a lady. I feel like a stranger at my new house , my husband wasn’t supportive at all he said they are little kids only so I should not expect them to be very clean and respectful. She even called her mom and told her I’m horrible because I don’t let her friends come to our house and  I didn’t let her dye her hair in my bathroom.... she told her mom I’m stressing her out and she will kill herself someday. We filed the motion for full custody and she wanted the kids back so she keeps getting child support from us. One day the kids just went straight to their mom’s house and ignored my husband’s calls. Then the next day CPS came to our house and said my step daughter told her friend that she put laundry detergent into my son’s formula and baby cereal when she’s not happy with me , she even spray him with the bleach cleaner........  my husband was very disappointed at that time and let them moved back home with their mom as they wish so everyone was happy for a while. I hate to say that but I feel like I can breathe again in my own house...I have my husband back cause he doesn’t need to drive 3 hours a day cause the kids want to go to the same school...and I can have dinner with my husband again cause his daughter only eats a certain kind of food and he will eat with her instead of me... my life went back to Normal and today the cops called my husband and told him my stepson let his girl friend move into their house and that girl is a missing girl that ran away from the parents...  and the cops realized that their mom wasn’t even home for 3 days cause she was cheating on her boyfriend and they got into a fight, she pointed a gun at his head and told him she will kill all of out and end her life... of course CPS took the kids and called my husband again...

this time I made it really clear that I would not let my step daughter move into our house. Not with what she did and not with my newborn 2nd baby... so he was caught in the middle of Moving out with them or let them go to foster care. He decided to move out with them and rent a hotel room and a house later... I’m home by myself with a 2 years old and a newborn baby...I’m battling with my baby blue every day and night and this doesn’t help me at all. My husband loves those kids way more than the two babies we have I know that. And it’s killing me inside knowing that he picked them instead of us. It’s the toughest situation I even have in my life. I don’t blame my husband for leaving but I wish the kids would just go away..... I thought I would have more love for my step kids after I have the babies , I tried to love them and treat them like my own kids but it’s impossible if the mom is still in the picture and feeding them all those lies..... I’m very sad and disappointed at this point... part of me want to let them all come home but the bigger part of me wish the step kids would just go away........

im sorry for the long story and messy typing, I’m crying the whole time and I need to listen to someone else instead of my husband telling me how horrible and selfish I am....

I’m thinking about divorcing him so he can finally be with his kids all the time. I can’t deal with this anymore..... please advise me what you guys think and I’m sure if you are a step mom you would know it’s so hard to be in this position too. I want to know what would you guys do if you were in my boat.  Would you leave your husband cause there is no way to fix the issue or I should let them move back home to me and try to work things out and keep the babies safe? Thank you so much.