second of all, remember that day in the observation room when she hugged armaan from the back? she automatically realized it wasnt sid and that it was armaan. so today, when she was so close to armaan and she hugged him, she didnt realize that it was armaan not sid? she's trying to find armaan in sid and hence she couldnt differentiate between the two. she wanted armaan from her heart and deep inside she knew what she was feeling was right and hence she didnt stop him. thats besides the point though since it's my own thought process of how riddhima may have felt. i may totally be off the line there but nevertheless, she failed to recognize HER HUSBAND.
third of all, shes going on a date with sid but what color does she think about wearing first? red. who's favorite color? armaan's.
fourth of all, white is pure. notice that armaan and riddhima were both wearing white. pure love or no?
fifth of all, how desperate is she?! omg! sid, hug me. please hug me! *rips shirt* R U KIDDING ME?! so to get rid of your guilt you decide to get physical with your husband. so after all those months of marriage, you realized now that you dont have a physical relationship with your husband?
sixth of all, y cant you just tell armaan straight up that you dont have feelings for him as a lover if you truly dont. y r u leaving him hanging?