After all you've been through and how you've pulled yourself together, in spite of the latest loss of your job, I think that you deserve better. he is causing grief and turmoil in your life now and it's not right.

I don't care that he's the father of your children. He's manipulating you with guilt to let him stay there but the fact is you're not married and heck he even has a gf in another state! If you were together, sure, you should live together for your kids but considering he's not your partner as a husband or bf even, he should NOT be living there. It's not YOUR responsibility to take care of his shelter at all.

In addition think about this. One might argue that it's good that both parents live under the same roof but I will say this. Only if they are actually a couple otherwise no. Waht kind of confusing picture do you think you paint for your kids by housing their father, even though, by every definitiion is someone else's significant other? It's like you're condoning cheating -- in their eyes of course-- because they see mom and dad but "dad has a girlfriend somewhere". it's not a good thing.

I think you should boot his butt out and get your life in order once again. You've proven you can already! I think honestly you can attribute some of the reasons you've succeeded in the past is because you WEREN'T attached to him! I don't know all the details but from the short bit I know I am gonna guess that he's a big part of the chaos in your life.