first of all ronit is just siddhi's friend...a well-wisher...he will not fall in love with siddhi...otherwise there is no point of SiNal re-union...this is no BALH...
in BALH the article clearly stated that rajat(sameer) will fall in love with priya(sakshi)...it was written in media...and in the show thats what happening...
but here the article even mahesh confirms that he is just taking care of siddhi and her son...
he is a jovial character who will make siddhi smile...a good friend...
ronit character is very positive...mahesh have done positive role in KDHMD
kunal might MU the relationship b/w ronit-siddhi...since she will change her surname...from siddhi chopra to siddhi diwan...
sulekha will ask her to move on in life with her son...secure her son future...siddhi will take the task of changing her son...sulekha won't ask her to be ronit's wife...its insane when she very well knows that siddhi loves kunal...
but yes kunal might MU ronit-siddhi relationship...he might even think to a extend that siddhi has married to ronit...and due to jealousy...anger...and madly in love with siddhi...he will talk ill to siddhi...which irks her too...he try to get intimate with her due to jealousy in drunken state...another MU...thats it...and even siddhi might want this to happen since richa was crawling here n there on him