Hi Pepe..
I think you have hit the nail on the head when you consider social groupings. How many times do we see young women married to or hanging around much older male actors for example. The same applies to older women actors etc with young husband or toy boy companions.
Here in the UK for example, a 27 year age gap in normal social circles would be very out of place and be frowned upon. Such mismatches reinforce the stereotype of Asian women as being in it for the money only.
I know its a wrong perception, demonstrating an ignorance of the individuals circumstances, and cultural issues.
However, perceptions are what endure..
AJ