I've had them come back after a week of no contact. The thing is if you chase them, they will run. If you dont chase them, they might come back. But if he does take a week to come back it is likely he is just lonely and figures maybe he will get back in touch... you can call him out on it and say "hey its good to see you, I thought maybe you had dropped off the radar. I do like you but I need a giy who is going to be there and show more interest by calling within the next day to arrange the next date so I know you're into me. If you are not that guy then that is totally fine, but that is what I need and I'll just find someone else who can be that guy". Or something to that effect. This tells him that you like him but you expect him to lift his game.