I'm 43, single and get to the gym 4 to 5 times at week at 4:30AM. I also cook for myself. I guarantee I'm in far better shape than the majority of couples in my age range, who tend to eat out frequently and not exercise on any kind of regular basis. In fact, I've been berated by dates for wanting to cook healthy meals at home rather than eating overpriced, unhealthy restaurant food all the time.
You should definitely stay single. It's pretty hard to improve on perfection.
That's because when you are in the dating stage, they want to go out and be seen.... you could serve gormet meals at home, every night and it wouldn't matter... they would still want to go out...
Get em preggers, and once there are a few rugrats in the picture being seen and going out to dinner regularly falls way down on the priority list.