When I split from my ex - and it wasn't an abusive relationship - I needed time and space to adjust and to support dd to adjust too.
It was a difficult but also empowering experience.
I started dating again around 2 years after the split. I haven't met anyone special enough and where we were totally compatible for it to develop into a serious, living together etc relationship
One guy was potentially that, but the difficulty we had was I can't have more children and he wanted children of his own as he wasn't a father at that point. Nobody's fault just wasn't meant to be.
Since then I've also dealt with coming out as bisexual and trying to get to grips with that adjustment.
But still didn't really meet anyone who I thought was not only right for me but the right person to have living with dd.
Dd has now left home, but the last several years my health has been very poor and I don't think it's fair to expect a potential new partner to deal with all that too.
You can date, have fun, have relationships WITHOUT moving them in or involving them with your kids! Yet so so many on mn seem to think that this is impossible!
So many also think they HAVE to be in a relationship to have validity!
I've enjoyed singlehood just as much as dating (health issues aside), it's great not having another adult to consider, to just suit yourself (and your kids), go where and do what you want at all times, have the house exactly as you want, even little things like never having to watch sodding sport on tv!!
I believe there's a few threads running now on the benefits of singledom - as well as the freedom programme it may be illuminating and motivating to read those op.
Being single really can be awesome!
Excellent post at 1030 by @Rinoachicken
Interesting that the relationship history isn't as clear cut as the op made out here.
If the boyfriend isn't living with you then how come your other threads seem to contradict that? I'm not convinced to be perfectly honest.
And while you may have "mentally" left your ex before the physical split, your dc were still living with him, with you, witnessing and experiencing the chaos, abuse, tension...
THEY need real time and space and support to recover from that. If they ever do
I'm also the child of an abusive home (they're still together), I left home at 17 as a result and at 48 I'm STILL dealing with the effects of that, and not feeling I was EVER prioritised by my mother, the one person who really is supposed to prioritise you, is a huge part of that.
Yes she was a victim too very much so, doesn't change how hurt and damaged I am by the number of times she let me down and prioritised him.
The only way at this point you can truly prioritise your dc beyond lip service is as pps say to have their HOME be a completely free and safe space from ANY other adult who doesn't have their needs as an absolute top priority and I don't think either your sister or your boyfriend fit in that category.
I also agree you're not fully appreciating that YOU need space to adjust and recover too. You can't do that while juggling the needs of anyone beyond you and the dc