First of all who proposes like that
Without seeing the face of the girl n in dark how can angad just randomly talks his heart out. There r so many ladies in house. Such things only happen in TV shows.
Any wife seeing her husband about his feelings to saali will get hyper.
Ppl do have EMA with saali even though they have kids with wife. We as audience understand that what confusion is there n how clean angad is . But from a wife's perspective it's natural to get heartbroken. Trust gets broken n if a wife or husband sees one msg in phone here sahiba saw full proposal
Also angad trying to save sahiba was before garry's death so after his death it's natural for sahiba to get more insecure.
Seerat is a b*tch who understood everything still didn't cleared the confusion n blamed sahiba more. It would have been better if sahiba would have let her drown. After knowing about confusion angad should realise seerat's true face.