They both have their faults ..
Archana's fault is her foolish decision making skills ...uff , she can be so dumb that it is really frustrating to watch her then ...she was downright foolish in the Chawl issue ..Maav was asking for the right thign then .. He was doing it to better the life of the Chawl people but this silly woman just would not listen ...
And then of course trusting and feeling sorry for Varsha ..All the time trying to cover up for savita's mistakes ..all these foolish mistakes have got her nothing but trouble .
Manav's biggest problem is his ego ..He cannot take his ego getting hurt specially if it is his wife who hurts it ...
During her pregnancy he was ignoring her and that was so wrong ...then he just took the girls and neevr checked his wife for 18 years ...her not calling him hurt his ego and he was too proud to call her ..Even Archana's love is not enough when it comes to his ego ...Archana means nothign to him then ...
A small example of this was today ...
Because Archu told him , I cannot see you now ...he just could not take No for an answer ...