Things get all intense and frequent and then he goes silent.
If you ask me, men play more head games than women do: provoking, then laying low; luring then backing away. Drawing you in closer and closer until it's the only thing you want and then they act uninterested and distant.
Maybe they don't realise it. Maybe it's just that they crave attention but not too much. If that's the case then make up your minds already!