This sounds awful, but I cannot imagine being with the same person for the rest of my life.
Maybe it's my past circumstance that lead to this - met DS Dad aged 20, had a mortgage and plans to marry at 21 - Sorry I should have said had DS too at 21! It was too rushed, I left him at 22. DS is now 21 :O
I met DD's dad when I was DS was 3 so 24/5ish... We had never lived together, although lots of stuff at each others places etc - he had been previously married, we met through his wife, his was 12 months seperated when we go together. I was 33 when I gave birth to his unplanned baby (was told couldn't have kids, unprotected sex for over 6 years..) We tried to move in and near killed each other (exaggeration).
I think that because I have lived on my own pretty much for over 20 years as a SP I couldn't possibly marry anyone and share my space. Of course I get lonely, of course I'd like a hug, but I don't need all the emotion that comes with it, and that makes me feel like I'm weird.
But on the occasion that I have had brief relationships, no matter how deep they went, I am always this is my home, my space, my work, my kids... and that's not through being a dickhead it's through no knowing how to let somebody into my life.
And then if I let them in and it failed?
I've worn myself out writing this
I don't think I'm the marrying type!
ps DS and DD both have very good relationships with their respective parents.