That's very less info so the only thing that came in my mind is: http://www.mangago.me/read-manga/undercover/
That's nice, enjoy reading it. (●❛ᴗ❛●)/
This one??? http://www.mangago.me/read-manga/sugar_dog_life/
yeah but thats not it on the cover it has the cop and the other guy next to him lol im so sorry this is so nondescripted
no ┗( T﹏T )┛
ive never read this manga but it's a yaoi and one of them is a cop, the art style is pretty modern