Freak out and ended it?

My partner of 10 months just turned 39 and i think he’s having a midlife crisis but he basically had a freak out about money, work, stressing, anxious, depressed and unhappy but didn’t know why. As a result he ended the relationship very impulsively. Why would he do this? Why would i still be holding onto hope.
Freak out and ended it?
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