以下是一些英文愛情勵志的句子：
1. Love is like a butterfly which flies away， but its memory remains.
愛情就像一隻蝴蝶，飛舞著，然後消失，但留下的卻是它的美麗。
2. Love is a gentle flower that grows in silence.
愛情是一朵在沉默中盛放的花朵。
3. Love is like the moon, when it does not increase, it decreases.
愛情就像月亮，不增加的時候也在減少。
4. Love is not a matter of counting the days. It's making the days count.
愛情不是數著日子過去，它讓每個日子變得有意義。
5. Love is a promise bound to an unknown future.
愛情是一個對未知未來的承諾。
6. Love is not something to get but something to give.
愛情不是一種得到，而是一種付出。
7. Love never dies a natural death. It leaves behind a memory that lasts forever.
愛情永遠不會自然消亡，它留下的是永存的回憶。
8. Love is a vine that grows into our hearts.
愛情是種漸漸滲透我們心靈的藤蔓。
希望這些句子能夠幫助你找到一些關於愛情的動力和激勵。記住，愛情是美好的，它需要時間和努力去培養和維護。