Well, emotional cheating should make you feel like you were in the wrong. If you didn't have a conscience, you wouldn't feel bad. So you stepped outside your marriage emotionally and developed romantic feelings. That's a form of cheating. You can feel badly about it, but don't beat yourself up and make a universal statement that you're a bad person because of this... it happens a LOT and very frequently in marriages and relationships. All you can do now is cease the relationship, learn and grow from this.... and keep your behavior in check so it doesn't happen again.