Boys may fantasize about girls because they are attracted by certain characteristics or behaviors of girls, which may be sexy or affinity, wisdom or humor or others. In addition, boys may fall into the illusion of love because of excessive expectation or imagination, because they may expect and imagine themselves with girls in some cases, rather than the actual situation. In addition, boys may be attracted by the influence of social environment, for example, friends around them already have girlfriends, or boys are lonely, which may lead to the illusion of love for boys. However, illusion does not necessarily mean that you have real feelings for this girl, so it is very important to judge your feelings and think carefully.