So he might come off as clumsy or less confident but that just means you are confusing him in a good way. Nothing terrifies me more than being so close to someone and then watching them become a stranger again. When you are just a hook-up, he will always make excuses about not seeing you so for this reason he will always say he is busy.
Those are simple text files written on your computer by your browser. As simple as that. If they are considering you as girlfriend material, they will show some of these signs. I want to fuck the girl my mom would be appalled at. You are throwing away an unknown amount of pussy, of unknown quality. He will look at you as his confidant, not just someone to unwind with but more as someone who gets him.