We moved a year ago. I’m not livid. Its impossible to give every detail. And how else should I react? Everyone including the kids make it sound like every second i’m there is just destroying them more. Really. I’m not trying to get sympathy…i’m trying to help. I don’t know what else to do!
Neither one of you is a practicing Catholic, so the cohabitation doesn’t surprise me nor bother me one bit. So you’re not going to read any judging from me about that. Cohabitating couples is as common as fescue in my yard. However: My advice would be to find another place to stay for a finite amount of time and give him a chance to move his family out of your home. I wouldn’t stay with this guy with all the dynamics you have explained. The whole family, as described by you, is a huge discombobulated dysfunctional mess. He needs time to get his act together and get his relationship with his daughters straightened out.
If the younger daughter is stable and no longer needs you to be her caregiver, then this is a good opportunity for you to exit. You can’t stay in that mess. Nor, can you wait for it to fix itself. I’d move out of you home for say 30 days, so he can move his family out, then move back in (alone) and let him fix this mess he’s in out on his own with his girls in their own home.
It would be different if he was a father to these girls full time, but he’s not. He’s struggling to even maintain being a part time parent to them as it is. The grandparents are raising these girls instead of being a part of the team. They all need to get together and work it out, and you being there is just a distraction. And mind you, the living arrangements of the girls may never change regardless of you moving out, staying there, or getting married or breaking up, or whatever.
The only other Catholic option would be to move out of the home, and marry, and then move back in. I can’t imagine marrying this guy with all this mess going on. It’s not like it’s going to go away. It might be that the permanant status that marriage gives you might enable the both of you to straighten it out together (it’s different when you’re his wife), but it’s going to take a lot of work and consistency. Frankly, after the older daughter agreed to the arrangement and then decided she was against it, causing you to leave, I wouldn’t come back. But that’s just me. She’s going through a lot right now which is understandible, but she’s playing the adults around her and will continue to do so. Once you get married in the Church, there’s no going back. So be committed to being miserable with this family or move on.