no I believed sadia kabhi comfortable nahi ho sakti.. b/c umair uska husband hai and ahmer ex hubby.
umair k liye phir bhi easy hoga b/c usne jitna issues banaye the dono ko lekAr wo sb clear hoge.. and than uska sadia Ahmer ko lekar koi doubt nahi rahega. and ahmer k saath umair ka normal behaviour karna umair and sadia k relation ko hi strong proof karega.as a hubby he respect and trust his wife past.
I don't know how they clear it all of umair mind because he has never accepted sadia past. That has been the main reason for everything in the show that ahmer sadia had a nikkah