he probably wants to talk to you regularly but doesn't have enough courage until he's had a few drinks. you should try making the first move if you are interested, he's probably a bit shy in that department.
Means he likes to text when he is drunk. Before texting was around, this is the same guy that would empty out his phone book and call random girls in it after the bar closed I bet...I've been there. Prob also means he is diggin your chili and interested in how you react to his drunk texts...any favorable response and he is yours. I think most guys really like when somebody shows them some love when they are drunk...
I guess it depends what the texts say. If you connect with the subconscious level when you are drunk then wouldn't he be telling you what he thinks? If he texts you something random like: "I like to eat horses and I like to ride donuts" then it prob means nothing.
He's thinking about you and if he text's you saying he's drunk, he might want to say things to you that he couldn't say to you usually. This time he would have an excuse if he says anything that's out of bounds.
I think it depends on how drunk he was and if he knew he was doing it?
I've a guy friend who called me when he was drunk. I figured out he was drunk when he called, so I didn't pay much attention to his call. We have totally NOTHING going on and he is being very good with his girlfriend of 6 years. Plus, he didn't recall about calling me at all the next day.