"Fever" is the fourth and final single from the Welsh heavy metal band Bullet for My Valentine's third album of the same name. It is the only single from the album that does not have a music video. It peaked at #23 on iLike Library's Most Added chart.
The title track was met with favorable reviews. After describing Your Betrayal as having 'infantry intensity and then some wonderfully crisp riffing', BBC Raziq Rauf then claimed that "This approach is maintained throughout the rolling, pogo-friendly title-track".