The Lady Eve
Jean Harrington and her father Handsome Harry are professional gamblers working the Southern Queen and taking rich idiots for a ride. That is, until Jean meets Charles "Hopsy" Pike, heir to the Pike Ale fortune and falls in love.
Him, too.
And, its all going swimmingly until Hopsy's overprotective man-nanny/body guard outs her as a professional gambler and breaks his heart. Hopsy then breaks Jean's heart. Time passes and Jean is presented with an opportunity to reacquaint herself with Hopsy as the Lady Eve Sidwich. Of course she takes it. She's plotting revenge.
So, that's the basic premise of the story. Boy meets girl. Boy loses girl. Girl is given a way to get back at boy (with whom she is still secretly in love) and she takes it. Really hilarious revenge scene ensues. Boy runs boldly back into the arms of girl not even caring that she's totally played him.
While The Lady Eve is not one of Henry Fonda or Barbara Stanwyck's best, its a pretty good boy meets girl comedy and I did find it entertaining.