This shit is fucking disgusting. What is wrong with people.
The same thing that has been wrong with people for ages except they didn't have a viable platform to communicate through. 15 years ago this same individual would still exist except social media wouldn't be as bloated as it is now so she simply would have no idea he even existed and he would have no way to let her know.
Twitter needs to shut down accounts that have harassing tweets. It is that simple.