Hi again, I am glad you wrote back.
You are right -- your first question is difficult: what's it called? I honestly don't want to sound glib, but I think it's just your process... it's you growing up. There is no clinical term. Would it be a life crisis? Those are typically defined by coming to a point in your life when you really wonder *is this it*? Is this all there is to life? Isn't there more? Women, these days experience that about 33-34 years of age.
But your story doesn't seem that way at all; it's filled with hope and wonder of what can be. You also sound positive about your past experiences -- and sure of what you want.
What do you do now? Find someone you like; meet people -- allow people to set you up on blind dates-- go out with anyone and everyone who will go out with you and don't prejudge anything. You never know where you are going to find love -- just let that happen.
Sites like e-harmony also have good success rates. They match you based upon commonalities. Having more in common makes it work better -- opposites may attract, but they have conflict when trying to live together.
Be open to whatever is in front of you, and do all the cliche things -- take a class in a topic you love to meet other people with common interests; network with friends who have single friends... talk to good looking men with no ring on their finger... be friendly, nonjudgemental and show interest in people while on dates.
And finally, let me know your thoughts....