I feel like cockblocking my friend.
Is there a special relationship between you and the person?
Yes, He's not accustomed to my boyfriend.
Not sure why you would do that, unless your friend is trying to steal your boyfriend. That shouldn't happen among friends.
I don't know, I just feel like disrupting things.
It is wrong to deny your friend a relationship or hookup. Unless the other person might be dangerous you should mind your own business.