My question involves a traffic ticket from the state of: Michigan

Two friends of mine work at the same place, and were both backing out of their respective parking places when one bumped the other with the rear of his car. The damage looks minor, its a few inches in diameter dent, but the quotes were 2,000$ to fix it (apparently the frame was dented)

Because they're friends they decided they wanted to just split the charges. However the one with a damaged vehicle does not own his vehicle, and the owner of the vehicle is refusing to pay anything, saying that he doesn't have to pay for any of it because his car was the one hit.

Both drivers are under Michigan PLPD, the minimum possible, and it was an accident between two cars, both with drivers in them, in a parking lot.

I really want to help them get this settled, and I think the best way is to give them exactly what the law states and move on from there.

-Thanks!