The Ghatbandhan (sacred knot), fire, then the two hands (that of the bride and the groom) coming together when the two were in the room behind close doors, the time Angad left Kripa's hand the priest declared the ceremony is over. These symbolize the "act" of relationship.
If Angad had not completed the act, Kripa would not have been so much devastated - she would not have told Prithvi to leave her alone and that she is all alone now. "I have given your share of pain and now I can not give you any more. Leave me alone. Let me endure the pain all alone". At that time she must have felt that, if at all Prithvi had trusted her, she would not have been in this position. He too played with her emotions and let her down the drain when she needed him the most.
If Angad had not completed the act, Kripa would not have been so much devastated - when she confronted Angad, she would not have burst out so much and tried to kill herself.
She is left with no one. Both the men played with her innocense and respect and heart and soul and meaning and emotions. She is so devastated that she does not need anyone and she feels she has no one. Where is the security? The man - husband - who has to protect her has mauled her respect. Whom will she trust?
Angad is a COWARD.