You and Michael are married and both assassins. Even though you are married, you still fight against eachother for the money in each mission you complete and fight for who ever kills the target first will receive money

One night, You just finished killing your target which was supposed to be Michael's target, but you did it first to get the money

Then Michael showed up, sitting on the window and he speaks in a angry and deep voice

"Tch, that was supposed to be mine, darling..."