Help Identify Film??

[Ma Chao]

Ok I need help to identify this film. I think its a film from Hong Kong. Its about a famous actor and actress that has been told to get married so as to make them even more famous or something, but in fact, they despise each other quite a bit. They flirt and stuff at the windows of the house that they live in so that the papparazzi can take loads of pics of them, but behind this flirting, they're actually "hurting" each other, such as the female giving the male a wedgie, or the male "seductively" removes the female's bra, whilst both standing at the window.

When they were newly wed, the female has also entered the male's house, to find all his underwear and clothing all layed out on the floor, giving her almost no place to stand, since they were dirty clothing.

Also halfway through the movie, they were starting to get to know each other, and may have developed feelings for each other. I think the male goes out for a run, and the female is suspicious, but in a good way. but when he comes back, he is welcomed with his house being flooded due to some reason..

Omg I'm sorry for giving such unorganised information, but if you know the name of the movie, that would be great! I think's it a HK film, I remember hearing Cantonese in it. But its definitely Chinese fo sho!