I'm going to end a couple's relationship.
Why do you want to end their relationship?
It's not my place to end a couple's relationship, but I'm going to play devil's advocate when I talk to them.
If they are happy together why would you try to wreck that? That's a really mean thing to try to do and you could really hurt people in the process.
What if I told you that I unfriended someone on Facebook? Would you think I'm a sociopath?
That is something completely different. You shouldn't get involved in other people's relationships like that and just let them be.