I think I now have the relationship a lot of posters are craving.
I met my DP 5 years ago after my separation in a 13 year marriage.
We both have a DC each. He sees his every weekend, my DC does alternate weekends with his father.
We moved in together two years ago. And from the beginning it didn't feel right. He is an extreme introvert, anxious and our parenting styles are completely different.
He lived in complete fear of upsetting his daughters strict home routine at the weekend. Also stressed about her waking up in the morning and him sleeping etc (she was 11 moving in btw
) so he used to wake up at 5am and doze on the couch for example until she woke up. Breakfast in bed for her at 7am, lunch at midday, same food, same time every weekend
My DC likes to laze in bed if he can, then enjoy brunch with me at 11am.
I was beginning to really dislike the weekends and I lost the peace and quiet of my alone weekends when my DC left for his dad.
I built up a social life when my exDH left and used those alternate weekends to catch up with sleep, chores and friends. But also sometimes to just exist in my underwear with Netflix and chicken nuggets. 
Because of his shyness I avoided entertaining at home (which is my favourite social activity) and went out more which he didn't appreciate.
I couldn't do right for doing wrong, and I hated not having time to myself.
So we decided to put the brakes on. It wasn't easy and there was much arguing. I worried about the failure of another relationship that I'd put my DS through. What people would say etc etc etc
He found an apartment 5 minutes away. And now we are each other 1-2 times a week and he's there if I need him. It feels a bit like starting again, but in the long term it's the best thing for us.
My place is again my sanctuary (spent all of Saturday in pjs watching Netflix), we have company if we need it, and I don't have to compromise or grit my teeth about things that drive me crazy. They aren't my problem now.
I don't think I'll ever live with him again, even when the kids grow up and leave. Did I want to grow old with someone?
Yes.
But I also wanted a fun family wedding, a long healthy marriage and an easy career path.
I got none of the above. 


But I have a good life, I'm lucky in a lot of ways, and I'm making the best of it.
Can't do more really.