What does this guy's behavior tell me about how he feels towards me?? what should i do?

It doesn't necessarily MEAN anything, especially when you haven't known him for very long. He might of had a stressful day and didn't think to ask you about yours, or he was in the middle of doing something important and didn't have time to be texting back and forth, or any of a hundred other things. If you try to read into every little thing like that, you'll end up driving yourself crazy. Give it some time before you start worrying about stuff like that.