Maan is not realizing that he who never spoke his feelings to anyone can come and speak about his thoughts to Geet who he thinks is silly When he realizes that he will change.
Geet has to understand Maan as a person dealing with illness. Trust me ML is not easy thing that can be dealt with. I know so many people suffering from this and it is sad. Maans memory loos is due to head injury which is possible but Alzheimer is one disease that has this as the symptom and it is extremely tough.
I am glad at least Maan sort of apologized to her that's a start.