Why would my boyfriend that lives far away wake up at 3 am and go to the bar and get drunk?

i used to live in vegas and moved to tenn about a month ago..even when we were dating in vegas he would always hang at the bar.what does this mean when he wakes up early in the am and goes to drink.is he trying to avoid me?when he is sober the few hrs of the day he talks about ho much he loves and misses me why does he do thi