| english title | Happy birthday |
| year | 2007 |
| country | Hong-Kong |
| director | Jingle MA Choh-Sing - 馬楚成 | |
| actor | Louis KOO Tin-Lok - 古天樂 | Nam |
| Rene LIU Re-Ying - 劉若英 | Mimi | |
| Macy CHAN Mei Si | ||
| Lawrence CHOU Jun Wai - 周俊偉 | ||
| Carl NG Ka-Lung | ||
| Richard NG Yiu-Hon - 吳耀漢 | ||
| producer | Eric TSANG Chi-Wai - 曾志偉 | |
| Jingle MA Choh-Sing - 馬楚成 | ||
| scriptwriter | Sylvia CHANG Ai Chia - 張艾嘉 | |
| Theresa TANG | ||
| executive producer | Eric TSANG Chi-Wai - 曾志偉 |
| genres | drama romance |
| duration | 105 min |
| production studio | Sil-Metropole Org Ltd |
| distributor | Mei Ah |
| financing studio | Black & White Films Ltd |
"Let's become best friend.. better than best friends" Mimi separated with Nam because she felt insecure. Mimi and Nam seemed never apart these ten years. Mimi thought that it was the best way to preserve their relationship. Their relationship was preserved, but Mimi lost Nam forever and ever. Every year, "Happy Birthday" evidenced his love to her.
