Why would Nandini marry Ansh?

Hey guys I was wondering why would Nandini marry Ansh? As well why is Nandini and Karan not together? Thanks!

ansh was pretending to be good and told tulsi he loved nandani. tulsi didn't know nanadani liked karan and asked her to marry ansh. nandani said she'll think about, she went to karan and todl him that dispite any misunderdtandings they might have had she loves him, does he love her?. karan said no he doesn't, but he was lying he wanted to sacrifice there love for his brother ansh cuz he knew ansh like her (i blame karan entirely for this problem, yes tanya played a SMALL part in ther misunderstadings but karan seems to LIKE sacrificeing and being miserable).

on there wedding night ansh revealed to nandani that he is still evil, they had problems from then on, few months after that he rapped nandani and weeks later tulsi shot and killed ansh when it looked like he was gonna hurt nanandi.


nandani did marry karan but hten went into coma while having bhoomi. karan then marries tanya and they raise bhoomi, nandani wakes up from coma. ansh's adopted dad adiya gugral marries mandira and tries to kidnap bhoomi, nandani kills adiya gugral and goes to jail. and then comes out and leaves karan saying he should stay with tanya. at this point tanya and nandani were pregant, tanya mad mathan and the fate of nandani's child is unknown.