If vansh had doubt this is not riddhima by doubting on her injury toh he would have sensed riddhima in danger
And first thing vansh would do is run in searching for riddhima not plant camera in bear etc kiss her forehead etc
Vansh dint allow ahana to sleep on bed .... he will not let allow riddhima look a like also on his bed but here he is full romancing so she is riddhima only
But whether games r played by both infront of others or riddhima is trying to play some game to save vansh tht we have to wait and see