Is it not wise to put hexes on people due it can come back three times back. Maybe try a banishing spell to rid the person in your life without hurting them.
Banishing spell
1 black candle, 1 white candle, a mirror,something that belongs to the person or the name on paper will do.
light both candles black(banishing) (white protecting,balance)
take the pic,item,name in the middle of the candles place the mirror above that.
visulasize the person and say
with harm to none may this spell not reverse or place upon me any curse. whatever thou shall do to me of it bounces
back to you so mote be.
this spell sends back whatever the person does to you. bascially his bad karma is sent back to him
maybe try a protection spell too.
Take care :)