There are attraction spells and entities that do exactly this: attract the right person for you into your life.
If you take a browse through the Love Tutorials collection, there are some ideas, and Dantalion stands out in this post for doing this:
You can layer this with related workings to say, create a captivating aura (Sallos), and enhance the passion in an existing affectionate relationship (also Sallos), and understand a loved one for perfect communication (Foras).