I've had 2 drunken hook ups with my coworker. And I've actually fallen head over heals for him. He won't return my texts, but acts totally normal at work and we get along just fine. I'm afraid to make the first move and ask him what's going on in fear of s

Well, you’re not desperate for asking him what’s going on. Mostly if you two are already obviously involved with one another. If he thinks that way, he is not even worth any of your time or energy. But if you two didn’t establish anything before you had sex, he may think that’s what your ‘relationship’ revolves around. I’m not saying he does, but he may think that. But there is no harm in asking. You at least will know how he feels so you can determine for yourself on what you want to do or not to do.