Yes it hurts just as bad on the net as it does in real life. A net relationship is the very same thing as an actual relationship the only difference is that you don't get to see the person like you would in real life. I understand though why it would hurt when someone flirts with others. They may not take it as seriously as they would an actual relationship but you may see it as the perfect relationship. My advice is to let them know that it is something that you are taking seriously and if a bond is formed make sure they know right away. That is how my relationship is going I love the person even though it is online and he knows how important he is to me and that I mean it when I say I love him. The relationship to both of us is as real as night and day and we take it very seriously. So it depends on the people entering a net relationship.