Limerence makes you upgrade your looks. "One of the signs of limerent behavior (that is hardest to hide) is the effort at self-improvement, especially in physical appearance," writes Dorothy Tennov. As the limerence increases, the initial happy thought that he or she must be admirable to LO gives way to doubt. The first hope that sparked limerence may then be lost, and the limerent strives to regain it by more attention to personal details.