Is pretending to be in love with someone to break them up with their boyfriend a bad thing to do?

"When I was in school with him, he would shout memes across the halls. An all around terrible guy. 
 
It was summer and I thought, "Hey, I'm bored and I really don't like that guy. I'm going to pretend to be in love with his girlfriend (we were good friends) and convince her to 'go out' with me instead." It took some pretty hard work but I managed to do it. I spent a while pointing out all of his flaws and why I was a better choice and she actually came around and said that she'd go out with me instead of him. I mean, I live super far away so it's not like that means anything, but mission success: he got dumped! 
 
but then, you know, I realized that the girl expects me to actually do boyfriend-ey things like talk to her and listen to her problems and stuff"

you are a cock blocker 

The fact that someone would do this, especially being entirely motivated by revenge or whatever the fuck (not even sexual contact, or anything?) is so sad. You're a pretty messed up kid. I can almost see where you're coming from if you're just trying to be a "bro" and bang some other guy's girl for the thrill, but you've put her and him through this just for your own twisted satisfaction? Now you're gloating about it on a message board? You're a fucking sociopath.

labbo94 speaks the truth my boy. you must mate with the female to justify your means.

Jesus Christ...

Thank you for giving us teens a bad rep-as if we didn't have enough already.