Most Helpful Guy
Sounds like he was hurt a great deal and wants to forget about you. People under the influence of love do not act rationally. Your desire to take a break probably made him think you no longer cared or were wanting to try on other guys for size so he couldn't deal.
Most Helpful Girl
Because he never loved you. At least not like you did. Saying "I love you" does not prove shit if it's not backed by actions. And according to what I've just read he wasn't considerate of you or caring enough, he even put u at risk by driving while drunk. If he doesn't think about your safety how can you think this is love?
The reason why he begged u to come back after you've broken up with him was because he realizes that he can control you after you've repeatedly given him chances instead of respecting yourself. But after seeing that you are finally not under his control for not wanting to go back to the relationship, he now will probably find a new girl he can manipulate