I previously warned you of making attachments more emotional through having sex ( I presume that's what you mean by hooking up ). Instead this is the time to be talking and seeing if there is a basis for a relationship that you mutually agree on. You have skipped a whole lot of laying the ground work for understanding through communications and have entered the limbo world of wondering what's on his mind, what his intentions are, and where is this thing headed.
You have yet to back up to a safe distance, and evaluate what you already know, and communicated honestly enough to make changes, or progress to what the next level should be. That's why you are dangling in the limbo of the unknown. Not only are you impatient, and very hopeful, you have done a great job of sharing your body, but not communicating with him and establishing your own boundaries. You have gathered no facts while playing the role of being in a relationship.
Many people I have found can only date one person at a time, and that's okay if you can recognize that its very easy to become dependent on the company of one person when you have no other options by which to follow, and get very carried away because its so easy to focus on just one person. Sure we are busy, and have friends, but dating is restricted to one person, so that's where all the feelings of romantic connections are focused on. Throw lust, and sex into that one person, and you can see where emotional bonds and attachments can be quite strong and distracting.
That's where you are, caught in limbo and don't know where to go. Step back to a safe emotional distance, stop having the sex, and start asking questions, and get answers, and pay attention. When there is no communications, just texts and sex, there is no building anything that will last. Whether you know it or not, you have given this fellow a part of you before he has proven whether he deserves it or not. I can't blame him for not being in a hurry, and its apparent that you are.
Slow down, and gets some facts, and proper communications established, face to face, person to person, and have more dates with others, not for sex, but for perspective. Not for a future relationship, but for friendship, and fun. That's what dating is about. Its not an interview for a relationship. The only commitment in dating is sharing a great time with someone. Not marking time until you get comfortable and agree to go to the next level.
You haven't marked enough time, or paid enough attention before the hooking up, or had enough fun, nor communicated honestly, and that's not dating. Its pursuing high hopes that this will last forever, and assumes very wrongly he feels the same way. The fact that you don't know is warning enough that you have missed something important.
Date others, for fun and friendship. Protect yourself MUCH BETTER!!
I know you have questions, fire away.