So I am that shy guy who won't approach any person, no matter the gender only if pressured to do so because of the situation (like asking a quick question). After a while, I started going out with friends some more and started drinking more, I'm not an alcoholic, I only drink at parties or clubs, but when I do, after a few shots, I have all the confidence I need to approach any one. By the end of the night, I make out with one or two girls and I have 2,3,4 new numbers saved from others. Problem comes when I sober up and have to text those girls. I had some bad experiences where I never could go past:

-Hey

-Hey too! How are you? What are you up too?

Small talk that leads no where of course and since then I am too afraid of texting really, because I tried numerous times and my mind simply won't give me anything to type. Just blank. Pure blank.

A recent event occurred when I met a really nice girl at a club. I forgot about the everything and we talked for hours while drinking and then danced really close to each other. She wasn't drunk, she had only 3-4 Longdrinks. She left me her number and good thing she had to go because after she left I kind of drank a bit too much and can't remember anything after. I say good because I am sure she wouldn't want to see me like that. I wrote to her two days after that, with my usual:

-Hi, I hope you made it OK back home. What are you up to?

-Hey, yeah I made it alright. Nothing much really, just came from work. What about you?

-Same here, and is pretty early still. What you say if we get out for dinner?

-Oh sorry, but I still recover from that night. (no other clue for any other time)

-OK. Cool, maybe another time if you would like.

-Yeah, sure.

Of course maybe she lost interest, because she only lived the spark in the club, then she realized she doesn't like me that much, but it's just an example which represents my whole situation, where I never manage to get past these mundane Q&A. Any advice? Thank you and forgive the mistakes in the wording, English is not my first language.