I can't help but see platonic relationship between Arhaan and Rashmi. There is absolutely nothing going on in between them, neither chemistry nor compatibility is visible.
I don't wanna judge because I haven't seen how they behave with each other in their space and this show is heavily scripted so it is very unclear.
Regarding Arhaan's sketchy character, Rashmi knows him for almost 2 years now, I am sure she would have heard something about this as she has many friends and contacts in industry.
Right now I am not taking sides in Arhaan and his ex issue, because both of their behaviour is extremely fishy and not all the points is adding up.
SidRa is like Bollywood masala movie😆, leave your brain at home while you go to watch it. It is super fun reading all the theories and derivations of each of their action🤣. With all the serious threads on this forum, SidRa threads are actually breather and super fun to read for me.