陆垚（包贝尔饰演）从上幼儿园时候就喜欢一个小朋友名叫马俐，可因为家庭原因，两人各奔东西，但彼此都没有忘记，虽然那时候年龄不大。十多年之后，两人考上了同一所大学，在校园里重逢的两人竟然都记得对方，陆垚也一直惦记着要和马俐表白，生怕错过这个机会，可是他一看见马俐就紧张说不出话，这是严重的表白障碍，马俐虽然喜欢陆垚，但是却不确定他是否也喜欢自己，只是觉得陆垚一直不表白或许是对她没有意思，女人的矜持也让她没有说出心里话，从而和另一个向自己表白的男人走到了一起，而陆垚只能亲眼看着自己从小就喜欢的女人成为别人的女人。转眼之间过去多年陆垚依然没有说出自己的心里话，或者友情的陪伴才是最长情的陪伴，他一直默默守护着自己最爱的女人。

Lu Yao (played by Bao Beier）I have liked a child named Ma Li since I was in kindergarten, but Due to family reasons, the two went their separate ways, but they never forgot each other, even though they were young at that time. More than ten years later, the two were admitted to the same university, and the two who reunited on campus actually remembered each other,Lu YaoAlways thinking about getting along with Ma Li confessed, for fear of missing this opportunity, but when he saw Ma Li, he became nervous and speechless. This is a serious obstacle to confessing. Although Ma Li likesLu Yao,But I'm not sure if he likes me too, I just thinkLu YaoMaybe it's not interesting to her if she keeps not confessing, and the reservedness of a woman also prevents her from expressing her heart, so she came together with another man who confessed to herself, AndLu YaoI can only watch the woman I liked since I was a child become someone else's woman. Many years have passed in the blink of an eyeLu Yao Still haven't said what is in his heart, or the companionship of friendship is the longest companionship, he has been silently guarding himself Favorite woman.