But will mention one guess in particular:
Rishab and Mandana shared a very special bond. No romance or love.
Just pure friendship in early stages, little flirting and a only a little trust.
Mandana is Mandana. No friendships no family boss, just game.
But this Mandana actually cared for Rishab. she fed him, saved food for him and danced with him in the mornings, talked and spent time with him.
Many don't like this friendship growing. example: Kishwar, prince, rochelle.
They will call Rishab as mandana's baby or boy mandana etc.
Something happened between Mandana and Rishab. It is some misunderstanding or fight...
It is not aired. so we all do not know what happened and who to blame.
Rishab was recently heard saying that he is Mandana's friend but she is not his friend.
so this looks like Mandana refused his friendship.
we also heard Mandana tell others that - she told Priya that - Rishab is like a puppy with leash.
Maybe Priya told that to Rishab.
Rochelle also told that mandana gave gaali in mother tongue. so some misunderstanding created by rochelle. Even when priya told to go clarify with Mandana, Rochelle stopped Rishab from going to Mandana immediately. she said mandana might be in bad mood.
so the misunderstandings increased.
However, Mandana is really strong and usually seen fighting and defending herself.
In this case she does not defend herself, does not remove her mike.
Looks like she knows that she did something that bothered him.
when Rishab is being mean to mandana, no one comes forward.
This could be because no one understood Mandana better than Rishab.
And she is hurt.
Only Rishab can fix it. They are all staying out of it.
or they want the friendship to break. They know Mandana is strong and can defend herself if needed.
Now Rishab is able to analyze everyone's game pretty well but he cannot analyze his own game. Major introspection deficiency.
If he had patience and if he bothered to hear and clarify things, this issue will never happen.
someone needs to make him realize to go resolve issues with Mandana. hoping Salman will help them.
This is just purely one of the guesses as to what could have happened.
I would still say that they both should be considered by fans with patience.
If they are in the same house, they cannot avoid each other.
They will talk to each other eventually.