Believe it or not, you came to the right place.
Buy yourself a decent mid-range tuxedo, a nice pair of shoes, a nice watch and 2-3 different ties/cummerbunds. Or a couple of nice cocktail dresses and shoes if you're female. Please...only if you're female!
Look into the local black-tie charity ball/events going on. Every major city has about one a week, sometimes more. Everything from dances to museum openings. Sign up, pay for your deductible tickets and go. And keep going.
I had a buddy that went to every one. I went with him 3-4 times a year. You run into roughly the same 75-80% of men and women, a lot of which are looking for someone to meet. After you've seen and talked to the same people a couple of times and they've seen and talked to you, pick somebody interesting out and go from there. There is a 'seasoning' period to these things, as some of the non-regulars are scammers or looking for a quick pick-up. You have to muddle into this a little.
The regulars are almost ALWAYS reasonably smart, high end professionals or people who have family money. My friend Dave always had a full 'dance card' and none of the women he met and dated were head cases or jerks.
Probably a good way to meet and fall in love with a nice, well to do woman or man as easily as you fall into love with a poor jerk. And if nothing else, gets you out of the house once a week to mix and mingle.
Its not even hard work. Even after only going now and then, I had plenty of attractive, interesting women come up to me regularly with the "didnt I see you at the museum opening last month?'...