当青年男女由朋友成为情人,尤其是进入诱人激动、甜蜜、幸福的热恋阶段之后,小伙子们常常忘乎所以,似乎身边的一切都消失了,存在的只有爱的炽热和感情的陶醉。和心爱的姑娘相偎相依,两情缱绻,情切切、意绵绵时,小伙子们很容易产生性冲动。性冲动是趋向异性目标的一股内在力量, When young men and women become lovers by friends, especially after entering into a stage of passionate, sweet and happy love, the young men often forget that everything around them disappears. There is only the passion and feeling intoxicated with love. And the beloved girl cuddle dependency, passionate, affectionate, meaning spontaneous, the young man is very easy to have sexual impulses. Sexual impulses are an inherent force toward the opposite sex goal,