Sid ke patch karne kaa pattern hai. When he sees that sana wants to come back to him, sid's mind starts working in right direction . And when he genuinely feels it ,he is like ok I want her back .
Yes he was upset with sana when she went with paras. It created lot of insecurities. But over the weekend many things happened which forced his mind to kickstart in right direction . He started analyzing sana again instead of sulking
How do I put it. Whenever sana praises sid or u know hints that she is for him ,with him, sid anger over their fight subsides and his logical brain ( which is one of the best) starts functioning properly . Then he goes back to analysing sana ,as to why she has done that. Why he did many things . Why the fight happened He alao starts thinking from sana's pov.
And it was so clear in both of their big fights.
The varun dhawan waal wkw ,it was so clear. Jaise hi wo call khatam hua, sid went into deep thinking zone. During the call, sana kept repeatedly saying that she will stand by sid, she is very close to him.
That thing had such a soothing effect on him . All his aggression, gussa went out of the window . And after that he was all silent and was just observing / thinking except for when he was asked to speak on flipper sana topic .