I think if rhea now asks him he will admit he has developed feelings for prachi. What disappoints me though is that the writers are showing rhea getting to know his feelings at same time as ranbir so we won't get to see ranbir's equation with prachi without Rhea knowledge which would have been better.
Yes, but the way he is acting, everyone would have found out. Still there is not any sort of feelings from Prachis side. So I guess they won't be seperated untill prachi too falls in love.