We dated for 6 months before moving in together and got engaged 3 years after that. We've now been together 17 years and still not married.
As long as both people are happy who cares if they are married or not!
(Male) friend of mine was in a same situation: lived with the woman (with the kid). He wanted to marry, but she didn't (because of her previous experience). Not sure what happened eventually (as I lost contact after moving from there).
"Life isn't about waiting for the storm to pass: it's about learning to dance in the rain..."
"When we are no longer able to change a situation - we are challenged to change ourselves."
"How people treat you is their karma; how you react is yours."