某大学二年级学生刘某,素对女生张某暗怀情愫,一次晚上校园偶遇,出于礼貌,张某对刘某笑了一笑。刘某以为张某对他有情意,是一种约会的暗示,竟然尾随张某来到女生公寓楼前,痴等到深夜;并在日后对张某纠缠不已,造成了不良影响。刘某的表现是青年性心理发展进入到爱情阶段所出现的一种“单相思”现象。单相思可分为两种类型:一是无感单相思,即一方根本不知道另一方在爱着自己,他们心理上带有较 A second-year university student Ryu, prime of the girl Zhang secret love 愫, a night on campus encounter, out of courtesy, Zhang smiled at Liu. Ryu thought that Zhang had affection for him, is a hint of a date, even trailing Zhang came to the girls apartment building, crazy until late at night; and Zhang entangled in the future, resulting in adverse effects. Liu’s performance is a “single-phase thinking” phenomenon that emerges in the stage of love when youthful psychological development progresses. Single acacia can be divided into two types: First, no sense of single acacia, that one party did not know the other party in love with themselves, they psychologically with more