I think you should just release the idea here. I think releasing it to a single person is going to severely limit the chances of it becoming a real thing. If it's a good (or great) idea, multiple people might be interested in building something based on your idea.
Good idea. I'm a bit hesitant now because if the idea sucks I will look like an idiot. But hey, good idea!
Don't worry about people stealing your ideas. If your ideas are any good, you'll have to ram them down people's throats.
Always apropos in such times of uncertainty...