I was out with 2 people, a guy and a girl. The girl was hanging close to me, talking to me, and the guy just kept chatting - oblivious to the fact that i was trying to close.

He's a gay dude, so he wasn't picking up on any signs. Eventually I told him that her and I were going somewhere else, and he was like "oh fun!" And started following us.

I literally had to pull him aside and explain the situation. Even then he still hung around.

She was annoyed too, and ended up calling it a night.

How would you deal with this?