You can say...

She dumped me...
or she left me..
I think those sound too harsh on the person who "dumped me"
I like to make it sound as if the person "dumping me/you"
like... i guess i'd say "leaving you" it doesn't sound as... harsh.
I have a deadline to hit... I'm busy. I need to stay busy, or i'll get sad.
Good bye for now.
RawR.