

Change isn’t necessarily impossible, but it’s really difficult and requires a huge amount of self discipline - if someone changes, they will be a standout exception rather then the norm. I urge you to consider that someone who ghosts you likely does not value you enough to be willing or able to put in the effort to change. Ghosting is deeply rude to do to anyone, and especially toward your significant other.
Take my interpretation with a mountain of salt, because I don’t know the full story. But, from what you said, it seems more likely that he reached out to you because you were a convenient backup
My heard-from-online understanding is that this is a combination of multiple factors: