Moving in with my bf?

me and my bf are going to move in together next yr we have been datin 4 nearly 2yrs now,but we argue a lot over little stuff but when we see each other its great and we get on fine,we live quite far away thats why we are moving in i only see him weekends mostly but we have a close relantionship even thou we are so far apart do you think that by us moving in is it going to be different between us or do you think we are doing the wrong thing by moving in just because we dont see each over much,i dont want to live with him and then we find out that we are not good together by being around each over allthe time im worried that are relationship mite come to an end??