Its a human nature to get into emotional attachment which we call it infatuation. Be it he or she, we cannot control our emotion and fell in love with opposite sex without knowing the feeling of other side. In many situation, he or she dont even know that someone loves him or her and thats a deadly combination.
One should understand before getting into one-sided love that he or she is hurting themselfs only. The emotionally trapped humans are most prone to depression and that lead to bad health. One should understand that anyone is also been cared by their loved one and lovedone also get impacted but most importantly one should understand that in one sided love, the human being loved by someone dont even know and can realize the pain and anxiety you go through..