Lucas must make a difficult decision regarding Brooke. Haley considers having sex with Nathan.
| Title | How Can You Be Sure? |
|---|---|
| Genres | Drama |
| Release Date | 2004-04-20 |
| Episode Runtime | 00 Hours 42 Minutes |
| Season Number | 1 |
| Episode Number | 19 |
| Production Companies | Warner Bros. Television, Tollin/Robbins Productions |
