Limerence is a state of intense romantic desire characterized by feelings of euphoria, anxiety, and obsessive thinking about the object of one's affection. It may also involve feelings of vulnerability, insecurity, and uncertainty about the other person's feelings. Some common physical symptoms of limerence include heart palpitations, sweating, nervousness, and a strong desire to be near the other person. Limerence is not typically considered a healthy or sustainable state, as it is often accompanied by intense emotional turmoil and difficulty functioning in other areas of life.