1. Coffee is bitter but love is sweet.

2. Let the aroma of the coffee add a touch of accent to your romance.

3. Love is like a cup of coffee； it has its bitter and sweet moments.

4. Warm coffee can keep you迷恋 for a long time, just like my love for you.

5. My heart smiles when I think of you, just like it does when I drink coffee.

希望这些句子能满足你的需求!如果有更多关于咖啡或爱情的主题，我可以继续提供相关的英语句子。