Seeing the relationship of Sid and Rashmi evolve in last few days , I feel it might be an everlasting one . Reason being they have been able to overcome and forget / maybe forgive the nastiness that existed in the past .
What I have seen is that Sidharth definitely took the first step to mend the relationship by teasing Rashmi here and there . Rashmi reciprocated ( maybe initially not with the intention to forgive ). Lately , there seems to be an underlying caring feeling in Sid towards Rashmi . It might be because their relation ( aa costars or friends) existed outside bigboss in their real life which overpowered the outburst within bigboss . It is quite mature of both of them to overlook each other attitude inside the bigboss and let bygones be bygones