“Barry’s twitter followed Rentboy” means Bathhouse Barry was listening to their tweets. But AFAIK there is no way to know that unless you log in on either account and look.
Who knows. There might be strange vice going on there, or might not. I don’t think Barack has ever copped to it like he has copped to chooming. Only “God and his hairdresser” would know for sure. I don’t think we want to bend ourselves out of shape with the speculation, because it could be wrong.