It can be but needs to work in tandem with a few other things in order for it to possibly work and there is no weird feeling and two days is a very short space of time.
All of that said, however, love spells like this one messes with free will and is frequently frowned upon. Also, that you have to ask if this spell is real means that you should not be casting it. If you are seriously interested in magick, then take some time to learn the basics first. There are plenty of articles on this site. Stay away from the fantasy spells. Magic can be quite rewarding if done properly but it takes time.