While antidepressants are already known to cause libido-inhibiting side effects, a new theory suggests they also fundamentally alter the chemistry of love and romance.

Wired reports that selective serotonin reuptake inhibitors (SSRIs) – the most commonly prescribed antidepressants – are widely known to cause sexual dysfunction, but they may also snuff the first sparks between two people otherwise destined to ride into the sunset on a white horse, and prevent couples from bonding.