What will happen? I've been in a minor accident.?

I was driving early this morning at around 6am, leaving my residency. I live in California, and while at a red light, I accidentally hit a guys car (he was stopped in front of me). He got out and so did I. There was nothing on the front bumper of my car, but on the rear bumper of his car (white ford focus) there

I was driving early this morning at around 6am, leaving my residency. I live in California, and while at a red light, I accidentally hit a guys car (he was stopped in front of me). He got out and so did I. There was nothing on the front bumper of my car, but on the rear bumper of his car (white ford focus) there was a minor scratch. He didn't ask for my policy number or look at my license plate number. But he did ask me for my number, address, and name. He told me that since it was just a scratch he wouldn't do anything, but if a dent later arised, he would contact me. I provided false information, and the guy also lives in my community but I'd never seen him before. He asked if I lived there as well and I told him yes, what's going to happen? What are the chances that a dent will arise in his car?!

Other answer:

Private:
A couple of things. Providing false Information is a criminal offense punishable by law. Secondly, a dent will not later "arise in his car". Either a dent is there or it isn't.

The guy certainly may decide to file a claim with his insurer. If he decides to do so all the info he and his insurer would need to track you down is your vehicle's license plate number. At that point all hell would break loose for you and your life would get quite ugly.

STEPHEN:
Providing false information at an accident is an offence. He probably has your registration number so it won't be a problem for him to find you. Vithe police as you've committed an offence.
Andy:
You were okay right up till you illegally gave him false information. That wasn't smart. I would expect you'll hear from him again. That encounter might not be as pleasant.
ThyKingOfDerp:
It's a scratch so no. but giving him false information is illegal when you hit his car so enjoy being charged.
Dáwñ:
you got off lucky … your lucky he didnt fall out on the ground holding his neck and screaming for help on his cell in preparation to massively sue you .. but sounds like it will be fine …