After seeing today's episode, it's sure that Sagar does have feelings for Vidya because he imagined her sitting with him during the puja. He was so disapointed when he saw that she wasn't really there with him. So I think he does really love her.
What I don't understand is, how will their relationship improve? Sagar blames her for what happened to Aniket and won't let her explain herself. I wonder if he would ever believe about his life being in danger? I hope all of this gets sorted out soon, because I'm very anxious to see SV back together..