关于学生时代的暗恋，英语中有很多经典的表达方式，以下是整理后的分类推荐：

一、含蓄表达类

1. "I give you my heart, please don't also came back."（我把我的心给你了，请你不要再还回来了）

2. "Or a person continue to lonely down, don't need anyone Li frets."（还是一个人继续孤单下去，不需要任何人怜悯）

3. "My love is like the grasses Hidden in the deep mountains. Though its abundance increase, There is none that knows."（我的爱情如同深山中的青草，虽郁郁葱葱却无人知晓）

二、情感倾诉类

1. "I loved you. I leave you. I'll miss you."（曾经爱过你，现在我走了，将来还会想念你）

2. "With the wonder of your love, the sun above always shines."（拥有你美丽的爱情，太阳就永远明媚）

3. "My heart, the bird of the wilderness, has found its sky in your eyes."（我的心是旷野的鸟，在你的眼睛里找到了天空）

三、经典哲理类

1. "You don’t love a woman because she is beautiful, but she is beautiful because you love her."（你不会因为美丽去爱一个女人，但她却会因为你的爱而变得美丽）

2. "When love is not madness, it is not love."（如果爱不疯狂就不是爱了）

3. "A person's unrequited love, a person's forever."（一个人的单恋，是永恒的执念）

四、细腻描绘类

1. "You smiled and talked to me of nothing and I felt that for this I had been waiting long."（你微笑着无话可说，我却觉得等待是值得的）

2. "My eyes are the stars over your window, Gazing affectionately at you every night."（我的目光如星子般守望你的窗台）

3. "Like together, don’t let up the meeting."（如愿相伴，莫辜负这相遇）

这些句子可单独使用或组合成段落，适用于写日记、制作明信片或口头表达。建议根据具体场景选择风格，并注意搭配标点符号以增强情感传递。