This is definitely a good time for some serious self reflection. How many people have you lost and let walk out of your life because of your stubborness and immaturity? If it's happening over and over again, guess who is the common denominator. You.
I can certainly sympathize, being somebody that hasn't really ever fallen in love with somebody, or ever felt like I could marry somebody. It's all depends on what you want and what you are looking for. I, now, am looking for something more serious than just a good time. Are you?
There isn't a set timetable for marriages, no rule book or age brackets to give you a decent amount of time. You probably weren't ready and it's good to look at why. You can't really blame her for walking out can you? She's looking for serious commitment and she doesn't have alot of time to do that. If she wants marriage, a family, and kids, at 36, the clock's ticking for her.
Take a little time to figure things out for you.
Waking up next to a beautiful girl,
Step outside and say hello to my beautiful world.