Here's what I think is going to happen tomorrow:
Prem drives crazily on the road, hits into a tree, wakes up and realizes that he needs to stop the wedding. He hails a taxi and heads to the hotel. He runs into the crowd of gathered folks and sees the bride (with ghoonghat) get into the decorated wedding car with Yuvraj. Prem stands in the stairs, watching the car leave, and cries. He figures that he has lost Heer forever. A little girl (introducing Tanu) sees Prem and pulls on his jacket and says, "Uncle, why are you crying?" Prem looks at the little girl and says that he has lost someone that he loves dearly. The girl tells him that she also lost her papa before she was born. She pulls her hand out for a handshake and she tells him her name is Tanu and she's 5 years (?) old and asks his name. He tells her that his name is Prem Juneja. Tanu looks at him cutely with a smile and says that's her surname as well. Prem looks at her with a frown. She points a finger toward the other side of the court. The camera shifts to Heer, whom Prem didn't notice. Tanu tells him that the lady who organized the whole wedding is her mother, Heer Juneja. Prem is stumped realizing the little girl is his daughter. He wants to talk to Heer but she is surrounded by many people asking for her business card. He asks Tanu where she lives. She gives directions to her home in Ambala.
The next day, Prem goes to visit Heer. He sees a little boy playing with Tanu in the courtyard and when he walks forward, Tanu sees him and runs to him. Heer hears the kids chatter and goes outside to see what is causing the commotion. The little boy calls her "mama" and tells her that Tanu's friend has come to visit. Heer turns to see Prem. Their eyes meet. Heer looks scared, while Prem has a frown. Prem is wondering about the little boy as well. They walk into the room that Heer came out of and Prem sees that it's her room. He looks around the room and lands his eyes on the bed and everything they shared in the past(steamy scene). Heer tells Prem that she never wanted to see him again, so why is he here. He says that she forgot to tell him something before she left him. She looks at him irritated, and tells him that he betrayed her, and she didn't want the pure thing inside of her to get sullied with having a father like that. He asks about the little boy and whose kid he was. She tells him that the boy is his as well. He looks at her surprised. She tells him that the mother is Ashlesha. Prem looks around expecting Ashlesha to show her face. Heer tells him that she left the boy with Heer and went off to parts unknown. Heer patiently tells Prem that Ashlesha left a letter for Prem. She goes to get it from the trunk by the bed. She hands him the letter. Prem opens it. We hear Ashlesha speaking, "If you are reading this, you have seen Heer. I want you to know that I have made mistakes in the past and I want to apologize to you and Heer. That night when I arrived at your house, bruised, I had a fight with my boyfriend and he raped me. I didn't have anywhere else to go and no money. I went to the Dr's and she told me that I was pregnant. Your mother Gayatri, saw me at the women's ward and figured out what I was doing there. She fed into my head the things Heer had done to me when Preet got married to Meher and that I should get revenge. She offered to pay me a lot of money which I desperately needed. She told me to try to break up your and Heer's relationship. At the same time, Gayatri hired some thug named Sameer to pretend to blackmail Heer and made it look like Raj was having an affair with Heer. When she found out that the plan didn't work, she found out that you were drunk and sent me to watch over you. I got you into that room and set it up to look like we had slept together. I got my revenge, but I felt horrible afterwards. After Heer left you, I found where she lived and when I had my child, I left him at Heer's door with this letter for you and a simple letter for her that didn't explain much. I am so sorry for the pain I have caused both of you. Ashlesha."
Prem hands the letter to Heer who quickly reads it. She looks at Prem and whispers, "Ma? Sameer? Not your son?" She drops the letter and runs toward Prem. They hug and touch each other on the face, arms, all over. The kids walk over and she tells them that this is their father and they jump onto Prem. Show Jugni very very happy with tears down her eyes.