Patterns of Bad Faith

I do think we are in a constant state of flux. But whether we are constantly attempting to reassert our awareness that our existence transcends essence, is questionable.
However, I don't think Sartre speaks with contempt as such. Rather, he makes a large assumption on the intricate workings of human thought.

'The man who is speaking to her, appears to her sincere and respectful as the table is round or square...'

Sartre maintains that humans are not exactly as one might consider them to be at any given point in time. i.e. I am not a student in the same way a house is a house. My being as 'the student', does not transcend or override my being in its entirety. I have a past and a future. Other 'roles' have been, and will be assigned by the 'other' in whose gaze I become an 'object'. In Patterns of Bad Faith, it appears that the young woman is the object of the young man's desire. But why does she choose to see this young man as 'sincere and respectful' as the colouring of the wall is blue or gray? Sartre claims this is because she doesn't know what she wants. Yet she knows, that in order to be 'satisfied' her entire person must be acknowledged and addressed - her freedom of being, must be acknowledged.