Here's my two cents worth...
I divorced at 29 and spent my time co-parenting (my ex was a wonderful man) my two kids. I dated and sometimes things got serious. I shied away from every man who took a serious interest in me. Couldn't even conceive the idea of living with someone else. 6 years ago when I was 44, I met Paul. I can't conceive of being without him.
When you can't commit to someone, I truly believe it is because he isn't the one. Be happy in your own space and someday IF and when it is right you'll be more than happy to share your independence with someone else.