Naaaah, i would run after someone like that if they they thought i was doing something wrong or behind their back!
and bearing in mind she still hasn't divorced sid and therefore as a wife she has to explain to her husband that she wasn't doing anything behind his back.
Also Riddhima's character is such that she will think that it is her duty to keep Sid happy. Remember when he wasn't being a great husband and asking her to clean his shoes, coming close to her without her consente.t.c. .. she went through with it as she felt it was her duty. If that was Armaan, no matter how much she loved him she would KILL him!
And Sid interpreted correctly that Ridzi still loves Armaan because she couldn't say "no", she just kept crying and running away from answering that question ..
Personally, I love Sid' character but I feel CV's are ruining him .. He sent those divorce papers, for whatever reason, and wasn't expecting Riddhima to sign it? I don't think Sid's character would do that, but CV's are making him because they just need a storyline.
And I am not saying all this because I am an AR fan ... Promise, no bias involved at all๐ ... Just my take on the situation, but then everyone has different opinions!
And please don't consider this as bashing!