Camille: So, what's your interest in Greene?
James Bond: Among other things, he tried to kill a friend of mine.
Camille: A woman?
James Bond: Yes. But it's not what you think.
Camille: Your mother?
James Bond: She likes to think so.
Mr. White: The first thing you should know about us is we have people everywhere.
Dominic Greene: My friends call me Dominic.
James Bond: I'm sure they do.
M: It'd be a pretty cold bastard who didn't want revenge for the death of someone he loved.
M: This is about trust. You said you weren't motivated by revenge.
James Bond: I am motivated by my duty.
M: No... I think you're so blinded by inconsolable rage that you don't care who you hurt. When you can't tell your friends from your enemies, it's time to go.
James Bond: How long have I got?
Felix Leiter: Thirty seconds.
James Bond: That doesn't give us a lot of time.
Answer: He's an operative of the Quantum organisation that Bond is up against who specialises in seducing women who can then be manipulated into helping their cause - in Vesper's case by pretending to be kidnapped to force her to cooperate. When Bond catches up with him, he's in the process of seducing another woman, no doubt to involve her in some scheme or other. Bond tells her the truth and she leaves, leaving Bond to deal with the Quantum agent.
Tailkinker ★