Life is like a cache, it always pauses when it is about to succeed.
Li Yuanyuan and CCC were about to get engaged. They both gave each other rings, and they got married and broke up.
The noun explanation of regret is: There are some people you have seen, loved and lost. However, you will encounter the antonym of regret, which is called "make up for". I don't know if it's that complete.
Conception: