Is it possible to fall in love overnight? (kinda long)

Okay, I really need as much advise as I can get, this is a long story so bear with me......

I was with my x for 1 yr. We lived together and it was pretty serious. It was good for the most part but we fought alot about dumb stuff. Well we broke up 3 months ago. I was torn apart. But I did alot of thinking and soul-searching. I decided not to get into another relationship until I truly knew what I wanted.

See when we were together I wasn't happy with myself. I honestly wasn't ready to be in a relationship. but we fell in love and things just progressed. After we broke up and these last 3 months is when I took a look back and realized this. So what I did was just go out and have fun with my friends.
Just kickin it. I've had more fun since we've been broke up then I've had in a long time

So, now this is where my question falls into place. I have talked to a couple different guys in the last month. I realized that I am happy with who I am and I know what I am looking for. Nothing got serious with any of the guys, but we just hung out.
Then came along dude....thats what I'll call him. I was actually talking to dudes friend, but realized we were just good as friends. So now me and dude are talking for about 2 weeks.

He is just so perfect for me. Everything I have ever wanted or needed in a man I have found. He is perfect and we are so good together. I almost want to say that I am in love with him. I feel so crazy talking like this, that is why this is so weird.
Now I know some of you might say that its just puppy love, and normally I would tell myself the same thing, but in this case I can't.
I have been in 3 serious relationships. 3 yrs, 3 yrs, and 1 yr. And I never ever felt the way I do now with any of them. And I was engaged to be married to my x. With my last two relationships, something inside me always knew that it wasn't gonna work out, even at first, but for some reason I still stayed in the relationship. I guess hoping that I would change my mind, but the truth lies in your heart. I always new that it would never work out long term. Now, the only thing I feel with dude is that it will only work out. There is no doubt whatsoever that he is the one for me. Nothing, nada, zilch......
He makes me feel like a teenager, and this is my first crush, except I am not a teenager. He makes me all giddy and tingly inside, which I might ad also never happended in my previous relationships.

I honestly can say that he is the one for me. This is the person that I was meant to be with. I can't even say that i "think" he is the one for me. I know that this is it. no more games, no more trying, this is where is ends. He is the one for me.

Is this possible? Can you fall in love with someone at first sight? Can you fall in love overnight? And if this has happened to anyone and you are now married, please please give your two cents...