Combine Dill leaves, Blessed salt , Angelica root, Patchouli essential oil , Rose otto, and Lemon essential oil , in a base oil ( or just buy "Love Uncrossing" oil )
make bath salts with this oil, and get a large offertory wihite candle.
Start on druing wanning Moon, dress white candle with this oil, bathe in mentioned salt ( You've made using the given oil ), then light the candle and say Your words of power for uncrossing ( for example Psalm 37th or 91stN ). Do that for nine or 13 consequitve nights, and as the Moon wannes so will the possible spell
If need be You may try Cut and Clear type of spellwork, which is more drastic ( depends on how much contact in future You may want with this person )
Try washing Your head with Florida water or Infusion of Dill leafs and patchouli or Rose petals as well