Try to be strong, it's normal to worry. Other wise you're just saying you don't care. Love does hurt and unfortunately it does take time to heal and forget. From a mans point of view, he's just trying really hard to forget the pain and put the frustration out of his head. Not that I took the same rout, other's look for that tranquility in someone else's arms (the quite approach). But anyway, just take it easy...his "damn I miss her" phase will pass soon.