Many people are upset because they feel Samaira's character is being butchered in the show to glorify a relationship or for other characters or due to the demand of the show. However, this isn't true as after analyzing Samaira's character, she seems to be a consisten character in the show.The fact that Samaira became friends with Radhika was really the best part of the show and SaRa bond was shown to be strong. However, they weren't sharing a strong bond according to me. The best friend tag was only from Radhika's side but Samaira dint consider her to be a best friend but rather considered her as just a friend.
People have said that Samaira always believed Radhika earlier but CVs are quite intelligent by showing this. The main aspect that has been missed here is the STATUS of Radhika.
1. When the first time Radhika told Samaira about Arjun's truth, Radhika was engaged to Saral.
2. The second time when Radhika told Arjun that he's not telling her about Nandini, Radhika was engaged to Saral.
3. The third time when Radhika again said the same thing about Arjun, she WASN'T ENGAGED. She had broken up with Saral. She being a SMALL TOWN GIRL was another reason for Samaira to doubt her friend as Radhika was not as rich as Arjun.
The character of Samaira is very close to reality as friends don't trust friends when it comes to their fiance/husband. They always check the STATUS of their friend whether the friend is SINGLE, COMMITTED, DIVORCED, MARRIED, POOR, RICH and so on. Unless and until they don't find a reason to doubt their friend, they trust them else they don't trust them. So Samaira's character hasn't turned negative but this is a flaw in her character from the very beginning.
I hope the spoilers are wrong which say that Samaira will join hands with Nandini and plot against Arjun as that doesn't seem real at all and this will butcher Samaira's character. Unless this doesn't happen, Samaira is still the old one we all know.
Disclaimer: This post is not meant to offend anyone. Comments are welcome but kindly avoid any sort of bashing.