So we have no way of knowing anything. It is just a question of whom to believe (if one wants to believe any side in this play). Some people accuse him, some people defend him. He defends himself. No one can prove anything.
My learning is the same as of some unnamed people in the article. In Germany one should never (esp. after our latest reforms on sexual laws) have sex without written and videotaped consent of the other party, esp. if they do not know the party. And every single consented practice would have to be signed off also.
That nowadays someones reputation can be destroyed with such an ease, I am appalled.