Best to move on completely. I once had an amicable breakup, then we got back together, and the second breakup was horrific.
On an unrelated, but kinda related note. Had been wanting to start a thread with this article but got sidetracked with other threads
Women Are Happier in Relationships When Their Partner Knows They're Miserable
Man, this is so true. My wife is like this all the time "I feel better when you know I feel bad" And I'm like "I feel better when you just feel better"