Most Helpful Guys
1: guys move on with actions first, and let their feelings follow behind. They don't wait to be over someone to go out and date/hookup. Dating & hooking up is how they emotionally get over it.
2: he broke up with you. It's likely he emotionally wanted to for a while, so he 'processed' the end of the relationship before he broke up (unless there was a huge fight and it was sudden, which it doesn't sound like).
It is really not for a lot of guys. Every woman I have split with have moved on much faster than I have. Most women can find another partner easier than a man so maybe it is just him... or guys like him that can do it.