How does the spark just go??

It kept going round and round in my head today about why my ex broke up with me.

She said the spark had gone even though days before everything was fine! She did say though it was more a gradual thing...

Can someone explain to me how the spark can just go, I really don't get it??

Has anyone broke off a relationship because the spark had gone?

Thanks

The spark doesn't just go away. It fades. For each person the fading period can be a long time years and years or it could be days. Your ex even said that it had been fading.

And just because you can't see it fading doesn't mean that something hasn't been wrong for a long time and she has been putting off dealing with it. Perhaps she has been trying to forget that the relationship isn't working for her and pretending that everything is fine in the hope that everything would be fine. But at the end of the day it wasn't okay, and she couldn't ingore the fact that the spark had died for her.