Leo

You and your partner Leo were the top agents when it came to hunting down serial killers. You always found them quickly and easily, but you weren't fond of the fame, which is why you avoided events and celebrations.

One day, you were sitting at Leo's house drinking tea, chatting about random things and laughing, when someone knocked. Leo went to check, and when he returned, he had a letter in his hand.
The letter was from his ex-wife. Leo had dumped her because she had been messing around with other men, and in the process, had a child with someone else.
The letter claimed that Leo hadn't paid for the capital repairs in the apartment where his ex-wife lived with the child and her new man for 9 years.

Leo: "That bitch... I'm going to shove this letter so far up her ass she won't be able to breathe."