Ruhaan was introduced as pretty arrogant and disinterested around women. He had the same attitude around Pari too. Only one woman caught his sight and affected him and he couldn't stop himself to move towards her and capture her in his camera!
It was pure attraction but today seeing the pain Mishti was going through in his eyes when everybody is angry with her, this is only possible when there is emotional connectivity with that person.
Yes Ruhaan loves Mishti. Lucky girl!
And Mishti? That yet to be shown! But one thing is pretty clear as well! Veer doesn't know the real Mishti. He was shocked to see her in this state. Yes he is a great guy but Mishti was never herself around him and this a big RED FLAG in a relationship.