According to German philosopher Arthur Schopenhauer "To marry means to do everything possible to become an object of disgust to each other". How is it then, that we consistently look for that other half of ourselves? How is it that we center our lives and focus on finding that significant other?
Schopenhauer gives credit to our will to live, or wille zum leben, which fuels our desire to have children for the continuity of the species. This will to live is the force behind our quest for that significant other, that in our minds will bring us happiness. He claims that this is the reason why we fall in love with people whom we would have never been friends with or feel attracted to people whom we are clearly incompatible with.
Clearly this is a very negative view of love, striping away human reason from it and comparing us to breeding animals. It might even be a tempting explanation to why some of us might have "terrible taste" when looking out for partners. However, our faults in love cannot merely be blamed on biology. It would be quiet comforting to blame the beast within for our shortcomings in love, it would remove all our personal responsibilities from our shoulders. We would be able to shift our focus away from our insecurities, impatience, jealousy and claim that it was our "natural tendency" which lead to such defects.
In the end, Schopenhauer did shed light on a very important aspect of love and that is impulse. Just like animals, we follow our impulses. When we think that we've found the one, we go for it. We don't really question whether we should have strong attraction towards a certain individual, we just love. As humans we haven't yet learned how to deal with our animal impulses and Schopenhauer reminds us that.