Spells which draw love to you without specifying who it must be are perfectly acceptable. These do not violate free will as they simply ask the universe (or God, or whomever or whatever you prefer) to find a good choice for you and gently nudge them toward you so that you can date and see if things will work out.
My note on that subject is that any spell which is meant to attract love into your life specifically will be relevant for attraction of the gender you're interested in specifically. It means that having done so, you'll focus the energy on the gender you're interested in to attract the love.
Thus, any particular relevant spell will be affective enough. I believe Hex gave you a good suggestion.