Eat alone all the time ... Every Thursday I treat myself to the most wonderfully delicious lunch at my favorite little Italian restaurant over in town ... Never made to feel less important than any other patron there ...
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As far as other restaurants go ... If a host or hostess asks if I'll be dining alone, I simply state that I will be joined by my Multiple Personalities today ... Often that gets us both giggling and breaks the discomfort of dealing with a "single" patron ...
And, I will not be put off in the back somewhere as if I'm a problem that needs to be hidden or solved ... I'll walk out and go to another restaurant who appreciates the value of a customer be they a party of one or a party of one hundred ...
Go on out there and treat yourself to the finest dining experience you'd give to someone else but not yourself ... You deserve to impress yourself too ... And you may come to find that you like having a nice date with yourself every now and then ...