This is a normal manifestation of the budding period of youth, please see below:

A girl named Shu Xin from Suzhou wrote a letter saying: "I am a girl who is in the first year of high school. Because I have a lively and cheerful personality, all troubles and unpleasant things seem to disappear in front of me, so the male and female classmates in school call me 'Happy Angel', and they also like to make friends with me. "But, something happened a month ago. One incident suddenly pushed me into a quagmire of pain and confusion. That day, the school organized us to go to Huqiu for a spring outing. Afeng, who was one grade above me, came to me before getting in the car and asked me to go with him. He proudly held up the camera in his hand and told me that he was willing to leave a beautiful life for me. Beautiful shadow. "A Feng is two years older than me. He is tall and free-spirited. He usually takes good care of me. In addition, we live in the same building, so I feel closer to him than other classmates. When we were taking pictures at a scenic spot , I was unsteady and almost fell down because I was trying to strike a pose. Afeng rushed over to hold me up. I was still in shock. His arm happened to be placed on my plump chest. Suddenly, a feeling like an electric shock spread throughout my body. I really wanted this feeling to last forever, but in the blink of an eye I pushed A Feng’s hand away in panic. “That night, I was lying on the bed, and my mind was filled with A Feng’s shadow. During the day, I always felt like I was getting an electric shock. It irritates me like a caterpillar. From then on, I looked forward to being with Afeng every day, but I was extremely afraid of seeing him. I was afraid that he would see what I was thinking, and that he would laugh at me and feel shameless. In order to drive Afeng out of my mind, I forced myself to read. I often looked at the book without knowing what I was reading. But strangely, I am particularly interested in some novels, poems and love guide books that describe love. Tormented by this ambivalence, my academic performance declined. "I know that now is the period of schooling, and having such evil thoughts is the beginning of degeneration. But I don't know how to get rid of such evil thoughts..." In fact, Shu Xin's mentality is normal. This is adolescence. It is an inevitable reflection of sexual arousal among boys and girls. There is no need to worry about it at all, let alone any sense of fault, shame or depravity. When a girl enters puberty, her body will inevitably undergo a series of unique sexual changes: menstruation begins, the breasts begin to develop, and fat is deposited under the skin, making the girl's body plump and round... These mean that the girl's body The secretory series begins to mature and estrogen begins to be produced. This is a normal physiological phenomenon for a girl. As her body matures, her sexual consciousness begins to quietly sprout in her heart. She develops abnormal feelings towards the opposite sex, feels curious and admiring towards them, and feels that they are attractive. . Many girls at this stage are emotionally confused: they want to show off their physical charms but don’t want to attract attention; they want to be liked and pursued by boys, but at the same time they are afraid of not being popular or being considered mean or shameless. . However, if, like Shu Xin, they have been locked in the view that sexual desire is depraved, sinful, or obscene, or if their views about "decent" girls are deeply ingrained, then their sexual agitation will be suppressed, even though they long to grow up. Becoming a woman, but at the same time harboring fear, always wanting to stay or go back to childhood in order to escape the turbulent reality of youth that we are facing.