It's this Asian Movie and I don't remember the title of it but I know it's a certain asian movie that is sub to vietnamese. It is an old movie. It's about a girl who has this problems with a Mafia Leader. In the past, the guy was a right-hand man of the Mafia Leader (or something) and he was intimate with this girl. Then, while at a mafia meeting or party, they were all being attacked. Both the mafia leader and the girl was in danger, so the guy had to choose which one to save. The guy end up choosing to save the Mafia Leader and the girl was (I believed) shot but survived. The guy eventually was reward to be the Mafia Leader.

In the present, This girl lived on until she encounter the guy again but now the guy wants her back. He always had her back, save her, pay debts for her, uses his authority as the mafia leader to save her, etc. The girl still was stubborn.

Until, The guy had to go an important party meeting with another group mafia leader. The girl knew he was endanger so she gathers her group of friends and try to warn him. The same thing happen again. While in danger, the guy had to choose between the girl or the other mafia leader. He ended up choosing the girl and try to save both of them.

I know that probably is very unfamiliar or didn't made sense but please help.

The more description I can give is that the girl has Short black hair and always wear red lipstick and she considered hot.
The guy who loved her has long hair up to his shoulders and always wear a black suit (since he succeed to become a mafia leader)

Please help and thank you~