I need to find this story

Ok so there was this story about this guy who was taking care of this little girl and it went into a flash back of him and this other guy i’ll call the main guy lance and the other one david. so david was like some kind of cop or something and he was married and lance was like a freelancing prostitute/hit man and lance would never stay in one spot so david ended up taking a liking to him and lance would always be the center of all of davivds jobs fast forward lance ended up getting into some problems and david’s kid was like involved and david wife was like if anything happens to my kid lance you will pay so then lance went to look for the little kid cause it got kidnapped and he found it and when david and his wife came to get his kid lance ducked out and left. i’m sorry this probably makes zero sense i’m trying to piece together what i remember but it’s probably not in chronological order ┗( T﹏T )┛