- Rajvir and Heer go to Hotel, book a room under "Mr and Mrs Juneja" just to get in Sameer's room (Rajvir gives his credit card)
- Sameer comes to the room and we see Rajvir kills him
Everything is definitely foreshadowing that Prem will doubt Heer because now there's a PROOF! Rajvir and Heer staying in a hotel room.. He will misinterpret this.
Also, I think Rajvir, Sameer, Gayatri are all in this together and Sameer is not dead.