Vividha created such a natural bond with this form of Atharv too. When she thought he recovered, she kisses his cheek passionately but when she realised he hadn't, she was quick to attend to his wounds without thinking about her heartbreak.
For her, she could live with this Atharv all her life because she loves him too much regardless. The reason why she wants him to recover is because she knows what he was like before. She knows what a personality Atharv Sujata was, his identity came from his principles and ideals. As far as Vividha is concerned, she loves that Atharv but also came to fall in love with the innocent child-man Atharv too.
So yes, love did happen to her more than once...just with the same person.