Time to dig out the movies you know he doesn't like... play some music that "isn't his thing," and chat it up with an old girlfriend on the phone and just have some 'you time.' If you want... dirty up the place a bit, (clean it up later.. of course)... and relax.
You're too busy thinking he's gone... to realize.. he's not here right now. Hell... walk around the house naked for absolutely no reason... Whatever strikes your fancy.
"The weakest soul, knowing its own weakness, and believing this truth that strength can only be developed by effort and practice, will, thus believing, at once begin to exert itself, and, adding effort to effort, patience to patience, and strength to strength, will never cease to develop, and will at last grow divinely strong."
- James Allen