Re: so you want to move on
> How do you move on from an intense five-year relationship? I
> feel hollow and sick.
well, you're offering us no particulars, so here's a general one ...
try to be creative. there's no miracle solution, you'll have to live it through. but you can do sth with the emotions, if you want to.
if it's precisely this that blocks you, try isolation from the rest of the world (convents are fine), or sth not goal-oriented (volunteering).
I wouldn't go for the sporty stuff like swimming or running, that's mentally rather boring. Maybe sth more dangerous that requires all your attention (rock-climbing, combat sports, ...), or - if you're not tired of people - team sports.
oh, and don't force yourself into anything.