Thanks for the advices guys, but it's not so great at the moment.
Analyze this texting convo we've had please.
DAY 1 (after we've had one msn convo the night before)
Me: [i made some random joke, forgot]
Girl: "Oh Dear... i hope i will not regret giving my number to you hahah where did you go?"
Me: "Think of the coolest place a guy like me would go to, and times that by 10. That's where I'll be"
Girl: "does such a place exist on earth?"
Me: "Usually not, but wherever I go, it kinda becomes extremely cool"
Girl: "that's some ego you have there hahah guess i should hang out with you more and hope that ur coolness will rub off on me.."
Me: "are you sure? ur ego might skyrocket so high that normal guys wont be able to approach you afterwards"
Girl: "being cool doesn't necessarily come with a giant ego.. and i don't need any normal guys to approach me now... so this could be a good way to ward them off

"
Me: "haha we'll see. Anyway i gotta get goin, so sleep tight, and ill see you soon"
Girl: "hopefully by soon you didn't mean in anyone's dreams.. and how did you know i was going to sleep? O_O"
Me: "Oh, didn't i mention i'm psychic? Make sure you don't dream about me, yet

"
Girl: "... is scared >< g'nite before i have nightmares.. and don't even think abt invading my brain while i'm sleeping.. my psychic powers > urs.. you will fail.."
Me: "lol good night sweetie"
Girl: "oh god *shudders*"
DAY 2
Me: "oh man.. i couldn't sleep at all. It's all your fault"
Girl: "you were thinkin abt weird things... weren't you?'
Me: "hey hey, i dont need to imagine weird things with you.. i just need to wait a bit

"
Girl: "i never mentioned anything to do with me in ur imagination.. and now ur msgs are getting kinda.. creepy :S"
ALRIGHT, ill end it there. After that last msg, i basically panicked because i was completely offguard to receive that, and i wrote some rly dumb texts tellin her to not take my words too seriously, and i also APOLOGIZED LOL
I know you guys will say I made a mistake in day 2 by acting like i'm constantly thinking about her and stuff, but I THOUGHT I got over that needing-to-act-like-i-dont-care phase from the texting the night before.
Obviously not..
I really thought, at the end of DAY 1, i had this girl. I mean, sure, the last msg by me could seem a little creepy, but if she DID like me, she definitely wouldn't have called me creepy or replied in such a glum way.
And let's just say, ever since day 2 (which was about 4 days ago) we haven't talked very much. And she's nowhere near as engaging as did on facebook, msn, and texting BEFORE day 2.