as so many are confused abt today maan's behaviour ..i think i got it right...let me explain it give ur comments whether i got it right and whether i am able to convince u all...
maan being sweet to geet is wat he is ... he loves her so he is being to her or may be if u notice the office staffs are looking at dem thru window so probably he was acting to be sweet ....
next maan being an angry man by character got pissed off in the morning itself by dadima as she started asking so many questions abt ring,club and why he is not inroducing her properly and all ...
with that mood as he enters the office he again got irritated to see all celebrations ....2 main reasons may be behind this
first he is already angry b'cse of dadima and before the hoshiarpur track he is also angry with geet as she keep on hiding her feelings for him ... in hoshiarpur he was nice towards her for obvious reason that she is in sad mood and his inner love for geet made him take atmost care on her....ven then if u think he at times got angry at her too .....he being a character who hates people hiding the truth here geet hides her feelings and since he cant hate her he is angry with her
second reason is he doesn't want to make the commitment public as geet accepted only to act and he only told she is his mangethar just for sake of a reason but not to commit without geet's approval
maan didn't eat the cake b'cse he saw the ring and before eating he has to take it and dat time dadi will surely ask him to make geet wear it and that will complcate the situation...
finally to end my observation maan is not acting weird its his own personality and we have to wait till tomo most probably it will a superb episode with answers for all our questions
comments please