If we look at the current track, it seems Ridhima has moved on. When Armaan had memory loss Ridhima said 'uska pyaar adhura rahe gaya'. Do you guys think this is what has actually happened in Armaan's case now?
Ridhima played a very safe love game with Armaan. She set her rules & made Armaan act on them. Her love was full of conditions, she wanted to portray to society that she is the epitome of perfection in all the relationships. She wanted to get A+ in everything including her personal life. In real life any guy would have left Ridhima long time back but since this is just a TV serial, we see drama taking over reality. Armaan's love is not bound by conditions, he loved Ridhima more than his life but may be Ridhima didn't need that kind of intense love, she is happy being in a shallow world & relationships. It is the irony, she kept on teaching Armaan about sincerity whereas she succumbed to her own trap & now she appears to be the most ruthless character who lacks passion to understand the depth of true love. She is so egoistic & her world starts & ends with her. Even now she is insisting Sid to say 'I love you' first. Right now she is all excited about new guy in her life & she has already started playing love games with him but again she lacks the sincerity in the new relationship too. I guess that's why it was easy for her to move on from her first relationship. Armaan was not only her lover but friend too whom she could rely & trust anytime but she chose to trust him whenever it was convenient to her. Whereas for Armaan she could never become anything more than a girl who liked to be in Armaan's company & that's it. Hopefully, she recognize what Armaan did for her soon & acknowledge who actually taught her meaning of love.
Sid is at that stage in Ridhima's life where Armaan was at the beginning who used to retaliate if she acted smart with him but eventually Armaan started giving in everytime for Ridhima because he was in love with her. She started overpowering him from that point. For now, Sid will resist & she will keep on running back to him but once she would know Sid has actually fallen in love with her, she will start demanding from him too & he would be the one running after her which actually has started happening already.