1) You look more beautiful every time I see you.
每次见到你，你都变更漂亮了。（妙就妙在用more这个词，很简单地就表示出“一次比一次更”漂亮的意思。）
2) I love you with all my heart.
我全心全意爱你。
3) I love you for you.
我真心爱你。（当你想表示爱的是对方的人，而不是其他如钱财、权势等，就可以这样说。）
4) For the same reason you like me, I like you, too.
我也喜欢你，就想你喜欢我一样。
5) My love for you is as deep as the sea.
对你的爱，情深似海。
6) I'll love you as long as I live.
我会爱你一辈子。
7) If the sun were to rise in the west, I'd never change my mind to love you forever.
即使太阳从西边出来，我对你的爱也不会改变。
8) You're the only man/woman I could be happy with.
你是我唯一想要在一起的人。