Lust is different from the biological sensations of attraction. Lust is a sense of intense sexual desire that can feel like it is dominating your thinking. The difference between love and lust is not an exact science, but lust is different from love and expresses itself in different ways.
Lust is selfish. It doesn’t have anything to do with who someone is, or what you love about them as a unique individual. When you love someone, you care about them and want to help meet their needs, whether or not they’re ready for sex. Lust, on the other hand, is focused on wanting to be with someone sexually only because of how that sexual contact can gratify your desires. It is more of a hunger or craving for someone’s body than a deep, unconditional love for who they are.