Most Helpful Guy
You can't decide "ok" at all. There was nothing else to say. If he asked it would've started an argument. Maybe he didn't want to argue. Maybe he accepted it and know he messed up. Maybe he doesn't care much. That conversation may not be over.
Most Helpful Girl
My guess is, he may have someone else. And also, his answer was probably to show you he doesn't care. This guy sounds like a jerk and your better off without him.