Riddhima felt tainted and it was shown through out the show! She felt like she didn't deserve Sid, I mean why was she wipe the mirror why is she trying to erase what happened.
Armaan today has destroyed Riddhima, he has destroyed her soul and self esteem!
Today when Sid went to Riddhima she felt so wrong, she couldn't give herself to Sid because of the mark left on her.
Armaan may not have physically raped her but mentally he has broken her, she will never be the same again be it with Sid or Armaan.
Everything she had built over the seven months Armaan destroyed in one moment.
People are saying look at her expressions, well both of them were for Sid! The one with Armaan is because she thought it was Sid, and she was letting herself go to him, but the one with Sid it is because she feels tainted she knows its Sid but with what happened it is a bad memory something she can't handle.
And the guilty is tearing her apart! She will never be the same and for this I blame Armaan he has destroyed her.
I can't help but feel sorry for Riddhima she moved on but her past destroyed her present.