Have you tried talking to him - it may be that he has no idea how you're feeling. The thing about thoughtless behaviour is that, well, people do it without thinking.I've been going through a wobbly with my husband that reached a head last week and now that we're actually talking ( and not yelling ) I think we understand each other a lot more and I now can see that we've both been letting things slide.
Like 4getmenot says, things do change. Unfortunately, the real world interferes in even the strongest of relationships.Only you know what you're true feelings for this man are and if you think your relationship's worth fighting for .
I wish you happiness whatever you decide.x