Long Distance..

My boyfriend and I have been together for three months with a two week break in the middle.. About a month ago he decided to move five hours away so he could be with his mom and little sister since his mom wasn't around for most of his life. When we're together the time spent is amazing and I wouldn't want it any other way. However now he is fully moved in with his mom and I start back up at school in two weeks.. Seeing each other is going to be harder than ever. I want this to work out but I'm afraid that it won't since we both get so busy we don't text or call each other as much as we did. Will the lack of communication break us?.. Help..