Wow. He suggested it and bought it out from underneath you.
Almost as ugly as the paypal/bitcoin situation.
i dont see a problem with this. he thought of the business name. he registered the domain. people register domains to sell all the time. its called capitalism.
The problem is this: it would have been irksome, but otherwise no big deal if reg'ing it out from under me was ALL he did. The very fact that he did so with blatantly false information, which has caused all the trouble now, is what is the problem.