The thing about love spells are they are powerful but take time to work. Wait patiently.
Love spells are also bad, most will advise you not to use a love spell, because you are forcing someones free will to love and that's not real love. The best way is to talk to the person, share your interests, and tell him/her your feelings for them and see where it leads. If they don't feel the same way, then move on and meet someone who does love you.