Beautiful yet painful. I sense a bit of bitterness in the line: Wilson got up, tried to stretch a bit, toyed with the idea of playing squash again. Indeed, there was no more reason not to.

Was that intended or am I reading into this something you hadn't intended? I could imagine a little bitterness being there for Wilson. It's a simple example of everything he has sacrificed over the years for his friendship with House (in this case, giving up activities that House caouldn't do post-infarction so House wouldn't feel bad) for apparently nothing; House deserted him and Wilson is alone, not knowing if House is even still alive.
Brava!