When you know that he is the one, you try to make things right.
Find out what is causing the most recent discord. See if there are patterns that you have noticed on his end and from your end.
Sometimes couple's become too used to each other and at times they become enmeshed (where one person loses their identity or freedom in the relationship)
See if you or him harbor such feelings. Couple's therapy is also helpful.
You would have to address the issues (not avoid them)
Working on improving the communication b/w the two of you would be important as well as figuring out what each person wants from the relationship and what is expected of the other person.
Couple's Communication Made Easy (Audio CD - June 2007)
Communication Miracles for Couples: Easy and Effective Tools to Create More Love and Less Conflict (Paperback - May 1, 2009)