... It is a prevalent occurrence, 1 poses health risks (Bell, Molitor, & Flynn, 1999;Bohner & Wänke, 2004), and is a cause and a consequence of relationship deterioration (Previti & Amato, 2004). As such, researchers of face-to-face infidelity have investigated prediction (Drigotas, Safstrom, & Gentilia, 1999), discovery (Afifi et al., 2001), and response methods (Mongeau, Hale, & Alles, 1994;Mongeau & Schulz, 1997), as well as men's and women's reported engagement in and perceptions of sexual and emotional infidelity (Boekhout et al., 1999;Brase, Caprar, & Voracek, 2004;Cann, Mangum, & Wells, 2001;Cramer, Abraham, Johnson, & Manning-Ryan, 2001;DeSteno, Bartlett, Braverman, & Salovey, 2002;Harris, 2003;Nannini & Meyers, 2000;Sabini & Green, 2004). Infidelity via the Internet, however, remains a nebulous topic. ...