I am born March 30,1980 and my ex boyfriend is born July 25,1951 is possible to reunite?

We had up and down relationship for 5 years and 2 months, but most of them were wonderful times together. After broke up we still keep in touch and met several times. I feel we still love eachother but too proud to admit it. We splitted then meet again and argue again then make up again. How to maintain this new relationship? are we capable to have better relationship like reunite with stronger commitment?