Right after you save the Haven colony:
Hanson: You know, you could always stay here. Settle down, make a new start...
Raynor: Heh. Guys like me don't get second chances, darlin'. We just gotta finish what we begun.
(Hanson kisses Raynor in the cheek, letting him drop his cigar...)
Hanson: You're a good man, Jim Raynor.
'(Hanson turns around and leaves, while Jim picks up the cigar from the floor.)
Raynor: I ain't that good...