I need some advice

Ok soo.. I have liked a guy for about 3 years and this year in January he asked me to be his girlfriend and I said yes we have had a GREAT relationship so far up until a week ago he stopped replying to my text. I have been trying to talk to him because he is moving schools the start of the next school year and wanted to know what we needed to do like if we where going to do a distance relationship or what because I really like him and he makes me really happy but he stopped replying to my text but he looks at them . What should I do? Help a girl out please!