以下是一些关于离别的常用英文句子：

1. Goodbye, my dear friend. I'll miss you.

3. It's time for us to say our goodbyes. Take care and stay in touch.

4. Parting is such sweet sorrow. Good luck in your future endeavors.

6. Though we must part ways, the memories we shared will always remain in my heart.

7. Saying goodbye is never easy, but I believe it's not the end, just a new beginning.

8. As we go our separate ways, let's cherish the moments we had and look forward to our reunion.