以下是一些英文表白的句子，可以根据你的具体情况和情感来选择使用：

1. I have fallen in love with you, and I want to be with you forever.

（我已经爱上了你，我想永远和你在一起。）

2. You are the love of my life, and I can't imagine living without you.

（你是我的生命之爱，我无法想象没有你的生活。）

3. I can't stop thinking about you, and I want to spend every moment with you.

（我无法停止思念你，我想和你共度每一刻。）

4. You are the perfect person for me, and I want to build a future with you.

（你是我完美的伴侣，我想和你一起创造未来。）

5. I love you more than words can express, and I want to show you every day.

（我爱你胜过言语所能表达的，我想每天向你展示这份爱。）

6. You have changed my life for the better, and I want to continue this journey with you.

（你让我的生活变得更好，我想和你一起继续这段旅程。）

7. I want to be the one who makes you happy, and I promise to always be there for you.

（我想成为让你快乐的人，我承诺永远在你身边。）

8. You mean the world to me, and I want to spend the rest of my life making you smile.

（你对我来说意味着全世界，我想用余生让你微笑。）

9. I am attracted to you not only physically but also emotionally, and I want to be with you forever.

（我不仅对你有身体上的吸引，还有情感上的，我想永远和你在一起。）

10. You are my best friend, my soulmate, and my one true love. I want to be with you forever.

（你是我的挚友，我的灵魂伴侣，我唯一的真爱。我想永远和你在一起。）