If you want a casual sexual relationship, that’s fine.
If you want to get married as soon as possible, that’s fine too.
It’s true that some foreign guys are just looking for a casual sexual relationship. Yet, the thing that tends to be left out of this discussion in the Chinese blogosphere, is that the people themselves are only acting as agents for the cultures in which they grew up.
The heart of this issue comes from the fact that dating, relationships and sex in Western countries is far more casual than in China, even in bigger, more metropolitan cities like Beijing and Shanghai.
With these thoughts in mind, remember that the cross-cultural street goes both ways.