When Roshni is not with him then the main priority of sid is her... Baaki sab bhaar mein jaye attitude he has that time ;)
But when Roshni is with him then he takes her for granted... And she is no more his FIRST priority :P
Now coming to Roshni when Sid was with her then he was her priority each and every second!! Except that Misha track where writers hit their head somehow ;)
But when sid is not with her, then her priority shifts to her family, her mother!!