Most Helpful Guy
Some music, shopping, gym, books, and hanging out with family and friends may be.
The idea will be not to thinknof him , whenever he comes in your mind , tell yourself "no" and divert your own thoughts to something else.
Most Helpful Girl
You realize their behavior is a reflection of their character, not a reflection of you. If they want to be a dick and use or manipulate people then they're a shitty person. You can be happy you're now free of that shitty person.