It would probably just result in the other person noticing you more, unless you have extremely powerful abilities for love workings.
Somebody tried a love spell on me, all it did was result in me knowing they tried it, because I felt it and understood what was happening. I did not feel any emotions to that person, because I could see right through the spell.
I'm answering honestly so nobody here panics thinking someone might do a love spell on them and make them obsessed or anything.
If you do a love working to bring someone to you, not a specific person but in general, then it could bring you a real relationship.
Doing a love working on a specific person can increase feelings of infatuation, but it will probably fade if you are not compatible for the long-term. And then they'll be left wondering why they fell for you in the first place.