Well, Ruby & Wallace weren't "posing" in any of the pics. Agree with ByTmE that those BTS "couple pics" are probably BFF camaraderie. But those pics catching them with matching silver & purple bracelets...errr....
Aside: I've been reading that Qing Shi secured even more funding and investors than Mei Ren Xin Ji (which already costed RMB50 million/US$7 million!). Huayi's Three Kingdoms director is one of the project's investors. It's been reported the production is already making money from pre-sales from advertisers and sponsorships.