lol..infact its opposite..rashmi was sarcastic and sid was serious..sid again told the same thing when they both chatted together in the sidra video week..so he was nt sarcastic in any way..He was being sarcastic but Rashmi was serious. Sid later also said after a fight that when the show ended they were on good terms and remained on good good terms throughout the show. His Mother in the show also said in an interview that they were good friends and Rashmi was supporting Sid when he left the show.
As u know, rashmi never keep grudges..she forgives and forgets soon..and also becomes friends..same is her equation with siddharth..she had separated from him for some reason definately which siddharth didnt tell..but then as time passed she forgt everything and again came to bb and gave it another try for the friendship..but again they fought inside the house..its been ups and downs for them all the time..