Here are some ways to express your feelings and confess your love to a girl in English:
1. I've been wanting to tell you for a while now... I really like you.
2. I can't stop thinking about you. I have feelings for you.
3. I've fallen for you and I can't hide it anymore.
4. You mean the world to me. I love you.
5. You've captured my heart, and I hope you feel the same way.
6. I've never felt this way before. I think I'm in love with you.
7. Being with you makes me the happiest person in the world. I want to be more than just friends.
8. Every time I see you, my heart skips a beat. I want to be with you.
9. I want to be more than just friends. I want to be your boyfriend.
10. Will you give me a chance? I want to be the one who makes you happy.
Remember, it is important to be sincere and genuine when expressing your feelings. Good luck!