When you're in a (supposedly) committed relationship with someone, assuming you're monogamous, what do you consider to be cheating? I think most everyone would consider sex with another person to be cheating, but is kissing? Flirting? Is simple texting cheating, or does it have to be sexting to rise to that level? Or maybe you don't consider that to be cheating at all. Is fantasizing about another person cheating? Does it matter if the person is the same sex (or if you're gay, does it matter if the other person is the opposite sex)? What are your triggers? For me, I only do open relationships, so cheating isn't an issue for me unless my partner becomes emotionally attached to the other person.