1. kiss
2. fall in love
3. relationship
4. travel together
5. understand each other
6. see the sunrise the sunset
7. sweet words
8. live far away from each other
9. talk about the future
10. sensitive
11. a sense of security
12. stay alone again
13. be melt again
14. fail to connect
15. feel disappointed
16. get lost
17. empty
18. maybe meet in the dream
