I don't know if Bill Manhoff's play THE OWL AND THE PUSSYCAT has been done in New York since the movie starring Barbra Streisand was made in 1970 - it has a great pedigree - the original was performed in NY with Alan Alda in the lead and the screenplay was written by Buck Henry. It's very entertaining and would work great with a minimal set - but the finks want $75 a pop for each performance.
The entire movie is available for free on youtube.com (see above)
I guess I'll have to write my own two-person romance. But if I had the money I'd do a revival of this.