Most Helpful Guy
Anything can happen.
The question is do you have a moral obligation to stop him or be concerned with this behavior?
If you broke up with him then it's no longer your responsibility to insure he's ok.
As inconsiderate as that may sound, if he was amazing to you you would have no reason to break up with him no?
Not to say things in value, but even considering how he treats you emotionally should be reason enough.