I miss you more than I can say.

意为“我对你的思念难以言表”，其中“more than I can say”表示强烈程度，强调思念之情非常深厚。

Every time I think of you, my heart misses a beat.

意为“每次想起你，我的心都会漏跳一拍”，其中“miss a beat”表示心跳暂停或跳动不规律，形象地表达了思念带来的强烈情感波动。

My mind is full of you. This longing is like a steady stream, slowly seeping in.

意为“我满脑子都是你，这思念就像细水长流，慢慢渗透。”

The stars are shining and the moonlight is soft, but only you can fit in my eyes.

意为“星星闪耀，月光柔和，可我眼里只容得下你。”

Sometimes, I do miss how it feels when you're around.

意为“有时候，我真的很想念你在身边的感觉。”

It doesn't matter how often we see each other what matters most is how much we think about each other.

意为“见或不见，并不重要，重要的是想念有多深。”

Time flies by and I remember I haven't seen you for ages. I send you a fine card with my missing and sincere blessing.

意为“在时间的荏苒流逝中，想起久违的你，思念油然而生。”

Wish to meet my angle again lovely girl in my dream!

意为“但愿会在梦中再见到我心爱的女孩!”

Faraway mountains can't cover the aftergrow just as I can' t hide my dear missing for you.

意为“远山藏不住夕阳的光晖，如同我掩不住对你的无限思念深情。”

Do you understand the feeling of missing someone？ It is just like that you will spend a long hard time to turn the ice-cold water you have drunk into tears.

意为“你知道思念一个人的滋味吗，就像喝了一大杯冰水，然后用很长很长的时间流成热泪。”

这些句子都表达了不同程度的思念之情，可以根据具体情境选择合适的句子来表达自己的感受。