although all characters are as per cvs...too creative to believe...but I think Veer's mistake is he fell in love with iccha, who never supported him, and in fact never interested in him. she would never pick up phones, will meet him to give lecture about tapasya...for her he was just tapasya's husband...and she didn't even tell him about plans to marry vansh...veer always tried to convince her...but without girl's consent, what can a guy do....that too a girl who doesn't have even own home...where he could go and talk to her. and she was sooo ideal that won't even think about sister's husband. now when his brother is finally married, he would lie about happy marriage...and may even sing for tapasya...else psycho bro can do anything. his mistake was not to reveal tapasya's truth to his mai...that I totally didn't get. although I think even if she would know she would be happier that this girl luv my lulla so much... and was soo desparate to marry...she won't think from veer-ichha's perspective...and anyway she wanted her to be DIL.