I think that you're really on to something with then whole "dating yourself" idea. I think that if we don't love and care for ourselves, we cannot love and care for others, be it a spouse, a child, a parent, whomever.
This past week I took myself out to a movie, and really enjoyed it. It's not like you can really even interact with the person in the next seat during a film anyway, so going alone is really not a big change. Go for it!
H: 44, Me: 45 Married: 20 y Together: 25 y no kids Walk away: 12/15 Asked for temp separation 12/25/15 PA confirmed 3/16 (apparently neither the first, nor the last PA he has had) H filed for D 5/16